skills/ai-film-pipeline-master/references/phase-01-story-generation/arcs.md

# Character Arcs

The five arc shapes, the component vocabulary they are built from, and how an arc is actually run across a script, a season, a series or a song.

No equivalent file exists in the Visual Creativity Database. Character is the second of the two axes the camera cannot reach.

**Structure of this file:** five arc cards with the full eight fields, then eight component cards for the parts every arc is assembled from, then twenty-two cards on running an arc in practice — its mechanics, the arc shapes outside the five, arcs sized to an episode or a lyric, ensemble and secondary arcs, and working method — and five named failures. Durable except where a card says otherwise.

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## Contents

- [The five arcs](#the-five-arcs)
- [The components](#the-components)
- [Running the arc: the mechanics of change](#running-the-arc-the-mechanics-of-change)
- [Arcs that are not one of the five](#arcs-that-are-not-one-of-the-five)
- [Arcs by unit](#arcs-by-unit)
- [Ensemble and secondary arcs](#ensemble-and-secondary-arcs)
- [Working method and diagnosis](#working-method-and-diagnosis)
- [Named failures](#named-failures)
- [Coverage](#coverage)
- [Sources](#sources)

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## The five arcs

Two are driven by Truth — the character either reaches it or already holds it. Three are driven by the Lie.

### Say What Is Changing Before You Name the Arc

**Also called:** the arc selector, the bearer before the shape, what is actually moving
**What it is:** The card at the head of the `arc.` shelf. It names no arc. It asks the three questions the shelf's own pair graph asks over and over — **are you choosing a curve, placing a scene on one, or testing a draft that claims to have one; what is the thing that changes; and where does the belief end up** — and hands back a named shortlist for each answer. The axes were not invented. They were read off the shelf's `Yields to:` conditions and cross-checked against every `Avoid when:` line, and the conditions that repeated became the questions. Every card named here is named by id.
**Effect on the audience:** None. This card never reaches a page. It exists so that the arc a script runs was chosen against the cast list, the runtime and the commission, rather than reached for because it is the one everybody writes.
**Used for and where it works best:** Answer the three questions **in order, out loud, in one sentence each, before opening the shelf**. The first answer eliminates roughly a third of the file and decides whether the other two apply at all. The second removes every shape whose bearer is not yours. The third is the only question that separates the five named shapes from each other, which is why it is asked last and not first. Where two answers to question two fight for one script, that is two arcs and `arc.collision` is the card that stages the fight. Where question three cannot be answered because the material has not been read yet, the piece is non-fiction and `arc.real_person_arc` governs before anything here does.
**Best in:** formats: all | genres: all
**Avoid when:** **The draft already exists and the note is that something is wrong with it.** This map routes only to working cards, and a broken arc is diagnosed by the named failures, which the map may not list — a selector that offered one would be offering to fail. Run `arc.arc_audit` instead, and read the failures directly. Also **distrust axis one whenever your honest answer is its first value**: nearly two-thirds of the reachable shelf lives there, so on a piece that already knows its shape this card has only two questions left and is doing a fraction of the work it does at outline. And **the routes under axes two and three are drawn from a pair graph Part One wrote before Part Two existed** — eight of Part Two's eleven live cards are the target of no route anywhere on the shelf, so the map will not send you to them. Read that file yourself rather than waiting to be sent. Finally, avoid it on a piece with no arc in it: a demonstration, a joke, a hook or a chant song, where `arc.sub_minute` and `arc.lyric_arc` both say in their own `Avoid when:` lines that bolting on a turn costs the payoff.
**Example:**
> **Q1** — "I am choosing the curve." → the shape cards stay; the beats and the audits drop out.
> **Q2** — "The thing that changes is a newspaper, not a person." → `arc.group_arc` · `arc.institutional_arc` · `arc.role_arc`.
> **Q3** — "Worse. The paper ends unrecognisable and nobody chose it." → `arc.institutional_arc`, alone — and its own `Avoid when:` asks the one question that can still kill it: *does one person run the place?* If yes, the shelf has already said where to go — `arc.corruption`, and it is that person's arc.

---

**The axes**

**Axis 1 — Are you naming a curve, placing one of its scenes, or testing a draft that already claims one?**
Asked first because it is the condition the shelf repeats in the most unmistakable form. Five `Yields to:` lines are a beat card telling you it does not exist in the shape you picked — *"Episodic work where the arc runs across a season"* (`arc.turn_placement`), *"Flat arc: the Lie attacked belongs to the world"* (`arc.first_challenge`), *"Flat arc: the seeing belongs to whoever was converted"* (`arc.self_revelation`), *"The piece argues the character has no agency"* (`arc.the_choice`), *"The ending must stay open or ambiguous"* (`arc.proof_scene`). Five more `Avoid when:` lines are a method card telling you which draft it belongs to — *"A first draft"* (`arc.arc_audit`), *"Discovery drafting a first novel"* (`arc.write_backwards`), *"Pitching"* (`arc.arc_statement`), *"One writer will finish the piece"* (`arc.arc_under_many_hands`), and *a thing to look for at outline stage rather than in the draft* (`arc.collision`). Ten conditions, one shape: **the grain you are working at decides which cards are candidates at all.**

**Axis 2 — What is the thing that changes?**
The condition the shape region repeats most, and it is stated as fact rather than as feeling: *"The protagonist is the only significant character"* (`arc.flat`), *"The piece has a clear single protagonist"* (`arc.group_arc`), *"A third character needs a full arc"* (`arc.supporting_arc`), *"One person runs the place; it is their arc"* (`arc.institutional_arc`), *"The audience must love a continuing lead"* (`arc.role_arc`), *"Serialised prestige drama where the lead must move"* (`arc.borrowed_arc`), *"Under ninety minutes, or cast above six"* (`arc.double_arc`). Every one of those is a count of people, not a judgement about them.

**Axis 3 — Where does the belief end up?**
Asked last, and it is the only axis that separates the five named shapes from each other: *"Commission requires uplift: kids, advertising"* (`arc.disillusionment`), *"Audience has no affection for a Lie-holder from page one"* (`arc.fall`), *"The first compromise is already large"* (`arc.corruption`), *"Adult drama: find the Lie under the incapacity"* (`arc.growth_no_lie`), *"The situation is in fact changeable"* (`arc.acceptance`), *"No end position; the change is not available"* (`arc.real_person_arc`), *"The audience contract promises a landing"* (`arc.unfinished_arc`), *"The interruption is the thesis, not an accident"* (`arc.interrupted_arc`). It is last because it is the finest cut and the easiest to answer wrongly early: most drafts believe they end better than they do.

---

**The map**

**Axis 1 — the grain**

| Answer | The shortlist, by id |
| :--- | :--- |
| **A curve — you are choosing what shape this change has** | `arc.positive_change` · `arc.flat` · `arc.disillusionment` · `arc.fall` · `arc.corruption` · `arc.growth_no_lie` · `arc.acceptance` · `arc.decision_arc` · `arc.double_arc` · `arc.group_arc` · `arc.supporting_arc` · `arc.episode_vs_season` · `arc.borrowed_arc` · `arc.multi_book` · `arc.sub_minute` · `arc.lyric_arc` · `arc.narrator_arc` · `arc.player_arc` · `arc.institutional_arc` · `arc.role_arc` · `arc.real_person_arc` · `arc.reported_arc` · `arc.unfinished_arc` · `arc.interrupted_arc` · `arc.false_arc` · `arc.sequel_reopening` |
| **A scene on a curve you have already chosen** | `arc.turn_placement` · `arc.first_challenge` · `arc.lie_rewarded` · `arc.point_of_no_return` · `arc.self_revelation` · `arc.the_choice` · `arc.proof_scene` · `arc.the_want` · `arc.the_need` · `arc.cost_of_truth` · `arc.collision` |
| **A pass over a draft, or an apparatus for keeping an arc alive across many hands** | `arc.write_backwards` · `arc.arc_statement` · `arc.arc_audit` · `arc.arc_under_many_hands` |

**And under the second answer the shelf names, in its own words, the shape that cancels each beat.** This is not a reading of the conditions; it is the conditions:

| The beat | Cancelled when the shape is | Go instead to |
| :--- | :--- | :--- |
| `arc.turn_placement` | episodic, the arc running across a season | `arc.episode_vs_season` |
| `arc.first_challenge` | flat — the Lie attacked belongs to the world | `arc.flat` |
| `arc.self_revelation` | flat — the seeing belongs to whoever was converted | `arc.flat` |
| `arc.the_choice` | one that argues the character has no agency | `arc.acceptance` |
| `arc.proof_scene` | one whose ending must stay open | `arc.unfinished_arc` |

*`arc.the_want`, `arc.the_need` and `arc.cost_of_truth` carry no such line, because the shelf files them as having a companion rather than an alternative: they are present in every Lie-driven curve at once. `arc.point_of_no_return` and `arc.collision` carry none either, for two different reasons of their own — one is excluded by format, the other points onward to a card outside the shelf — so all five are chosen by the question and never by a route.*

**Axis 2 — what is the thing that changes** *(asked of the first answer above only)*

| Answer | The shortlist, by id |
| :--- | :--- |
| **The protagonist — the person the audience is following** | `arc.positive_change` · `arc.disillusionment` · `arc.fall` · `arc.corruption` · `arc.growth_no_lie` · `arc.acceptance` · `arc.decision_arc` · `arc.sub_minute` · `arc.lyric_arc` · `arc.multi_book` · `arc.sequel_reopening` · `arc.unfinished_arc` · `arc.interrupted_arc` · `arc.false_arc` · `arc.real_person_arc` |
| **Somebody other than the lead, because the lead must hold** | `arc.flat` · `arc.borrowed_arc` · `arc.supporting_arc` · `arc.double_arc` · `arc.episode_vs_season` |
| **A thing that is not a person — a crew, a firm, a chair** | `arc.group_arc` · `arc.institutional_arc` · `arc.role_arc` |
| **Somebody outside the story — the teller, the player, the witnesses** | `arc.narrator_arc` · `arc.player_arc` · `arc.reported_arc` |

**Axis 3 — where the belief ends up** *(asked of the same set)*

| Answer | The shortlist, by id |
| :--- | :--- |
| **Better — the Truth is reached, or held against pressure** | `arc.positive_change` · `arc.flat` · `arc.growth_no_lie` · `arc.supporting_arc` · `arc.borrowed_arc` · `arc.group_arc` · `arc.episode_vs_season` · `arc.multi_book` · `arc.sequel_reopening` · `arc.sub_minute` · `arc.lyric_arc` · `arc.narrator_arc` · `arc.player_arc` |
| **Worse — the Lie wins, the Truth turns out bleaker, or one of two takes it** | `arc.fall` · `arc.corruption` · `arc.disillusionment` · `arc.institutional_arc` · `arc.double_arc` |
| **Nowhere — the belief is where it started, and what moved was the verdict, the situation or the chair** | `arc.acceptance` · `arc.decision_arc` · `arc.role_arc` · `arc.reported_arc` |
| **Not delivered — withheld at the threshold, taken away, counterfeit, or unsupported by the record** | `arc.unfinished_arc` · `arc.interrupted_arc` · `arc.false_arc` · `arc.real_person_arc` |

*A card appears once per axis. The answer is the intersection, and under Axis 1's first value it is normally one to four cards wide.*

---

**The default, and the one against it**

**The default is `arc.positive_change` — and it is measured, not asserted.** Four cards send a reader to it, and they fire on four different conditions from three different regions of the shelf: `arc.flat` (*"The protagonist is the only significant character"*), `arc.growth_no_lie` (*"Adult drama: find the Lie under the incapacity"*), `arc.acceptance` (*"The situation is in fact changeable"*) and `arc.decision_arc` (*"Feature or novel length needs transformation"*). Asked four times, from four places, for four unrelated reasons, the shelf falls back here.

**And the card that looks like it might be the default is not one.** `arc.flat` takes three inbound edges, which on a raw count puts it close. Two of the three come from `arc.first_challenge` and `arc.self_revelation`, and neither is a fallback: both are beat cards saying *you already chose flat, so this scene does not exist in your script.* They point into `arc.flat` from the machinery rather than across the shelf toward it. Counted by distinct condition instead of by edge, `arc.flat` is reached for two reasons and one of them is the other one restated. **In-degree here measures how often the beats discover they are in the wrong shape, not what the shelf falls back on.**

**The one against it is `arc.false_arc`.** Nothing routes to it, no `Yields to:` on the shelf names it, and the shelf files it as an execution note with no alternative — it is as unasked as a live card on this shelf can be. It is the default run as a lie: every beat of `arc.positive_change` delivered in full and genuinely earned on a first reading, with one small physical thing planted that never moves, and the reveal arriving as a decision under pressure rather than a confession. It is `arc.proof_scene` played backwards. It costs one thing only, and the card names it — a witness who was present for the original behaviour must still be present at the end, or the reveal is an assertion rather than a reversal. Where the default asks an audience to believe a change once, this one asks them to believe it twice and be wrong the first time, which is the more common shape in the lives the audience actually has. **Its cousin against the grain is `arc.reported_arc`**, where the change may never have happened at all, the piece declines to say, and the writer's only obligation is to have decided privately and told nobody.

---

**The unasked**

**Twenty-two of the reachable cards are the target of no `Yields to:` field anywhere on this shelf**, and three more — `arc.self_revelation`, `arc.the_choice` and `arc.real_person_arc` — are the target of nothing except a named failure. By id, the twenty-two:

`arc.disillusionment` · `arc.the_want` · `arc.the_need` · `arc.cost_of_truth` · `arc.first_challenge` · `arc.lie_rewarded` · `arc.point_of_no_return` · `arc.double_arc` · `arc.multi_book` · `arc.sub_minute` · `arc.lyric_arc` · `arc.collision` · `arc.write_backwards` · `arc.arc_statement` · `arc.arc_audit` · `arc.narrator_arc` · `arc.player_arc` · `arc.institutional_arc` · `arc.reported_arc` · `arc.interrupted_arc` · `arc.false_arc` · `arc.arc_under_many_hands`

**And the shape of that list is the finding, twice over.**

**First: eight of Part Two's eleven live cards are on it, and Part Two's routes nearly all run one way.** Six of the eight working `Yields to:` fields in Part Two point back into Part One — `arc.player_arc` to `arc.decision_arc`, `arc.institutional_arc` to `arc.corruption`, `arc.role_arc` to `arc.borrowed_arc`, `arc.real_person_arc` to `arc.acceptance`, `arc.unfinished_arc` to `arc.proof_scene`, `arc.interrupted_arc` to `arc.fall` — while only two fields in Part One reach forward into Part Two. **The pair graph was written by readers holding Part One.** Part Two knows Part One and Part One does not know Part Two, so no route exists to the narrator, the player, the institution or the witnesses, and a writer who only follows routes will never arrive at any of them. That is not a defect in those cards; it is the age of the edges. It is also why the map above reaches them by question rather than by route, and why this card's own `Avoid when:` says to read that file directly.

**Second, and worse: `arc.self_revelation` and `arc.the_choice` are reached by nothing but a named failure.** `arc.told_revelation` sends a reader to the first as a repair; `arc.plot_solved_arc` sends them to the second as a repair. These are the two beats the shelf calls the seeing and the deciding; they are the climax of every Lie-driven arc on it; and **the only door into either of them is a card describing how to do it wrong.** A builder trusting the pair field at face value would have made both of them axis values and routed writers to them through the failures, which is the map offering to fail. Those edges were excluded and both beats are reached here by the grain question instead.

The third thing the list shows is smaller and still real: **every component is unasked.** `arc.the_want`, `arc.the_need` and `arc.cost_of_truth` are named in prose by half the shelf and routed to by none of it, because they are not alternatives to anything — they are what a Lie-driven curve is made of. The card this shelf wants and has not got is the one saying *the Want and the Need are one object seen from two distances*, and the nearest thing to it, `arc.arc_statement`, tests that the two are incompatible without ever saying they are the same thing.

`arc.what_is_changing`

---

### The Positive Change Arc

**Also called:** the change arc, the transformation arc
**System:** Truth-driven. The character begins holding the Lie and ends holding the Truth.
**What it is:** The character believes something false about themselves or the world, pursues a Want that the Lie makes sense of, is progressively deprived of the Lie's protection, and finally chooses the Need over the Want at a cost.
**Effect on the audience:** Hope with evidence. The audience is not told that people can change; they are made to watch it cost something, which is the only version they believe.
**Used for and where it works best:** The default arc for most commercial narrative — features, animation, coming of age, romance, sports, redemption. It is also the correct arc when the audience is expected to act afterwards: brand films, advocacy, educational drama. The load-bearing requirement is that the Want and the Need must be genuinely incompatible, so that the climax is a choice rather than an arrival.
**Best in:** formats: Feature Film, Animation Feature, Novel, Limited Series, Short Film, Brand Film | genres: Drama, Coming of Age, Romance, Sports, Redemption, Family Drama, Adventure, Comedy
**Avoid when:** The story's argument is that this particular character or system cannot change — then a positive arc falsifies the material. Also avoid in episodic television that must reset: a genuine change arc spends the character, and a series that changes its lead every week has no lead.
**Example:**
> **Lie:** a man is what he provides.
> **Want:** the contract.
> **Need:** to be in the room when it matters.
> **Climax:** he loses the contract because he is in the room.

**Yields to:** `arc.flat` — Episodic series whose lead must not be spent.  
`arc.positive_change`

### The Flat Arc

**Also called:** the testing arc, the steadfast arc
**System:** Truth-driven. The character already holds the Truth; the world changes instead.
**What it is:** The protagonist begins with a correct belief, is tested by a world built on the Lie, refuses to abandon the belief, and converts the people around them. The arc belongs to the supporting cast.
**Effect on the audience:** Moral clarity and a different kind of suspense — not *will they change* but *will they hold*.
**Used for and where it works best:** Series leads, franchise characters, mentors, detectives, and any protagonist who must remain themselves across many episodes. It is also the honest arc for stories about people who were right and were not listened to — whistleblowers, dissidents, the first person to notice. The requirement most often missed: at least one supporting character must complete a full positive change, or the flat arc has nothing to show for itself.
**Best in:** formats: Series, Procedural, Feature Film, Animated Series, Serialised Fiction, Documentary | genres: Procedural, Crime, Western, Superhero, Faith, Historical, Kids, Heritage
**Avoid when:** The protagonist is the only significant character. A flat arc with nobody to convert is a static character, and the audience will experience the correct belief as smugness rather than steadfastness.
**Example:**
> She is right about the building on page one and right about it on the last page. Everyone who dismisses her is changed by the end; three of them are changed too late.

**Yields to:** `arc.positive_change` — The protagonist is the only significant character.  
`arc.flat`

### The Disillusionment Arc

**Also called:** the bleak truth arc, the negative learning arc
**System:** Lie-driven. The character moves from a Lie to a Truth — and the Truth is worse.
**What it is:** The protagonist holds a comforting false belief, has it stripped away by experience, and ends holding an accurate and painful understanding of the world. They have grown; they are not better off.
**Effect on the audience:** Recognition, often uncomfortable. This is the arc most adults recognise from their own lives, which is why it lands hardest and sells least.
**Used for and where it works best:** Literary adaptation, war, coming of age with a hard edge, memoir, political drama, historical work about a failure. It is the correct arc for heritage and documentary subjects where the honest ending is that the thing was lost. The craft requirement: the false belief must be genuinely attractive, and the audience must share it at the start, or the loss costs nothing.
**Best in:** formats: Feature Film, Novel, Limited Series, Memoir, Documentary, Stage Play | genres: War, Coming of Age, Literary, Political, Historical, Social Drama, Tragedy
**Avoid when:** The commission requires uplift, which is most advertising, most kids' content and much broadcast drama. Also avoid when the disillusionment arrives from outside rather than from the character's own investigation — being told the world is bad is not an arc.
**Example:**
> He joins to find out what happened to his brother. He finds out. The finding out is the whole of the ending, and he does not do anything with it.

**Yields to:** `arc.growth_no_lie` — Commission requires uplift: kids, advertising.  
`arc.disillusionment`

### The Fall Arc

**Also called:** the tragic arc, clinging to the Lie
**System:** Lie-driven. The character is offered the Truth, refuses it, and is destroyed.
**What it is:** The protagonist holds a Lie, is given repeated and increasingly clear opportunities to see it, chooses the Lie each time, and is destroyed by the final consequence. The refusals must be understandable.
**Effect on the audience:** Dread with sympathy. The audience sees the exit the character will not take, which produces the specific agony that defines tragedy.
**Used for and where it works best:** Tragedy, gangster, addiction, ambition and obsession stories. Structurally it demands a clear pattern: three offers of the Truth, each one easier to accept and costlier to refuse, with the third refusal being the point of no return. The commonest failure is making the character stupid rather than committed — the audience must believe *they* might have refused too.
**Best in:** formats: Feature Film, Novel, Limited Series, Stage Play, Opera, Musical Theatre | genres: Tragedy, Gangster, Crime, Psychological, Historical, Literary, Noir
**Avoid when:** The audience has no affection for the character. A fall requires something worth losing; a disliked character falling is a plot, not a tragedy.
**Example:**
> His wife offers him the way out in Act One and he laughs. His partner offers it in Act Two and he pays him off. His daughter offers it in Act Three, and he explains to her, patiently and at length, why she is wrong.

**Yields to:** `arc.corruption` — Audience has no affection for a Lie-holder from page one.  
`arc.fall`

### The Corruption Arc

**Also called:** the descent, choosing the Lie
**System:** Lie-driven. The character sees the Truth clearly and rejects it.
**What it is:** The protagonist starts holding the Truth — decent, principled, ordinary — encounters the Lie in an attractive form, sees exactly what it is, and chooses it anyway. Unlike the Fall, this character is never confused.
**Effect on the audience:** Complicity, which is the most uncomfortable and most durable effect available. The audience follows each individual choice as reasonable and arrives somewhere they did not agree to go.
**Used for and where it works best:** Crime, political drama, workplace and institutional stories, and any narrative about how ordinary people participate in something. It is the strongest arc for a long series, because each season can be one further step. The essential mechanic: every step must be defensible on its own terms and indefensible in sequence.
**Best in:** formats: Limited Series, Series, Feature Film, Novel, Stage Play | genres: Crime, Political, Gangster, Psychological, Social Drama, Historical, War
**Avoid when:** The character's first compromise is already large. A corruption arc lives entirely in the size of the first step — if it is big, the audience separates from the character immediately and watches from outside.
**Example:**
> The first thing he does wrong is not report a mistake that was not his. Nobody is harmed. He knows precisely what he has done and files the report anyway.

**Yields to:** `arc.fall` — The first compromise is already large.  
`arc.corruption`

---

## The components

### The Lie

**What it is:** A flawed belief the character holds as true, usually about themselves — that they are worthless, that they are owed, that they must not need anyone, that love is earned by usefulness. It is not an opinion; it is the operating assumption everything else rests on.
**How it works:** The Lie is protective. It was formed to prevent the repetition of a specific past harm, and it once worked, which is why the character will not release it.
**How it fails on the page:** When the character can state it. A Lie a character can articulate has already been examined, which means it is no longer a Lie but a position. Give it to the audience through behaviour and let the character stay unaware.
`arc.the_lie`

### The Ghost

**Also called:** the wound, the backstory
**What it is:** The past event the Lie was built to protect against. It does not need to be dramatic; it needs to be formative.
**How it works:** The Ghost explains the Lie without excusing it. It is the reason the audience forgives a character for behaviour they would otherwise reject.
**How it fails on the page:** When it is delivered as a flashback monologue, and when it is bigger than the Lie requires. A vast trauma producing a modest flaw reads as unearned drama; a small, specific, repeated humiliation is usually truer and always cheaper.
`arc.the_ghost`

### The Want

**Also called:** the external goal, the conscious desire
**What it is:** The specific, concrete thing the character is pursuing, which the audience can watch them get or fail to get.
**How it works:** The Want drives plot. It must be visible, achievable, and measurable — a job, a person, a house, a verdict, a return home.
**How it fails on the page:** When it is abstract. "He wants respect" cannot be filmed, cannot be lost, and cannot be won; "he wants his name on the sign" can be all three.
`arc.the_want`

### The Need

**Also called:** the internal truth, the unconscious requirement
**What it is:** What the character actually requires in order to stop being harmed by the Lie. The character does not know it, and usually resists it when named.
**How it works:** The Need drives meaning. The story is designed so that pursuing the Want moves the character further from the Need, which is what makes the climax a choice.
**How it fails on the page:** When a character states their own Need out loud. The moment they can say it, it has been met, and the story is over an hour early. Let someone else name it, wrongly, and let the character reject it.
`arc.the_need`

### The Opponent Who Shares the Want

**What it is:** An antagonist who wants the same thing as the protagonist, which makes the conflict structural rather than arranged.
**How it works:** Shared want means only one can have it, so the opposition needs no malice. It also allows the opponent to be right, which is the difference between a villain and an argument.
**How it fails on the page:** When the opponent's want is merely to stop the protagonist. That is not a want, it is a function, and the audience feels the machinery.
`arc.shared_want_opponent`

### The Moral Line

**Also called:** the stated limit, the thing they would never do
**What it is:** Something the character declares early that they will not do, which the arc will require them to do or to refuse at maximum cost.
**How it works:** It gives the audience a measuring stick. Without a stated limit, escalation has no scale and the audience cannot tell whether the character has gone far.
**How it fails on the page:** When the declaration is solemn. A limit stated as a principle sounds like a plant; a limit stated casually, as an aside, in a scene about something else, is invisible until it matters.
`arc.moral_line`

### The Mirror Character

**Also called:** the foil, the alternate outcome
**What it is:** A character who holds the same Lie and is further along its path, showing the protagonist — and the audience — what happens if nothing changes.
**How it works:** It externalises the stakes. The protagonist can be warned without anyone delivering a warning.
**How it fails on the page:** When the mirror is a failure in every respect. The mirror must be attractive in some way the protagonist envies, or they will not fear becoming them.
`arc.mirror_character`

### The Cost of the Truth

**Also called:** the price of change, what transformation takes
**What it is:** The specific thing the character loses by choosing the Need — a relationship, a career, a home, a version of themselves.
**How it works:** It is the only proof that the change is real. An audience accepts transformation in exact proportion to what it cost.
**How it fails on the page:** When the character gets everything. A climax that grants the Want and the Need simultaneously converts an arc into a wish, and the audience discounts the whole thing retroactively.
`arc.cost_of_truth`

---

## Running the arc: the mechanics of change

The five shapes say what happens. This section says where it happens, and in which scene.

### Where the Arc's Turns Sit Against Structure

**Also called:** arc-to-structure mapping, the four arc beats, welding the inner story to the outer one
**What it is:** The arc has four load-bearing moments, and each is fastened to a plot beat rather than floated between them — the Lie shown working, the Lie first seriously challenged, the Lie used and rewarded, the Lie abandoned or re-embraced.
**Effect on the audience:** Plot and person register as one story. When the two are misaligned the audience experiences it as pace — they say the film is slow, when what is actually happening is that nothing inside moves when something outside does.
**Used for and where it works best:** Every long-form piece with a plot, and the first thing to check when notes say "the second act drags". The craft rule: no arc beat may land in a scene with no external consequence. Each of the four turns must also win or lose something visible, because an interior turn with no stake attached plays as a mood change and the audience will not file it. The test is brutal and quick — name the four scenes by page number. If you cannot, you have a theme rather than an arc. The beats to fasten to are `struct.stc_break_two`, `struct.stc_midpoint` and `struct.three_act_pp2`.
**Best in:** formats: Feature Film, Novel, Limited Series, Animation Feature, One-Hour Drama, Game Narrative | genres: Drama, Coming of Age, Crime, Thriller, Romance, Social Drama, Redemption
**Avoid when:** The structure has no plot points to fasten to — `struct.kishotenketsu` and the other non-conflict systems, where forcing the four turns imports a three-act skeleton into a form built to avoid one. Also loose in episodic comedy, where the arc runs across a season and the episode owns the plot.
**Example:**
> p.14 — he lies about the money and it works.
> p.30 — his daughter checks the lie for the first time. It holds.
> p.60 — the lie gets him the promotion.
> p.95 — he corrects it in front of the board, loses the promotion, and his daughter is not in the room.

**Yields to:** `arc.episode_vs_season` — Episodic work where the arc runs across a season.  
`arc.turn_placement`

### The First Serious Challenge to the Lie

**Also called:** the first crack, the inadmissible evidence, the challenge they survive
**What it is:** The earliest moment the story puts evidence in front of the character that the Lie cannot absorb — and the character absorbs it anyway, out loud, by explaining it away in a way the audience can hear.
**Effect on the audience:** They learn the shape of the defence. From this scene on they can watch the Lie operating without anybody naming it, which is what lets the rest of the film run without narration.
**Used for and where it works best:** At or just before the first act turn, in every Lie-driven arc. Three craft rules, in order of how often they are missed. The challenge must come from someone the character cannot dismiss — not a stranger, not an enemy, because both are easy to discount. The explaining-away must be *good*: a weak rationalisation makes the character stupid and ends the audience's investment. And the counter-argument the character fails to make must be visible to the audience, so that they are ahead of him by exactly one step and no further. Pairs with `char.lie_in_one_line`, which is where the Lie gets written down before any of this is staged.
**Best in:** formats: Feature Film, Novel, Limited Series, One-Hour Drama, Stage Play, Animation Feature | genres: Drama, Family Drama, Coming of Age, Crime, Psychological, Social Drama, Addiction
**Avoid when:** Flat arcs, where the challenge is to the world's Lie rather than the character's and the resisting is done by everybody else. The failure mode is placing this beat too late: a Lie first challenged at the midpoint has spent the whole first half unopposed, and the audience has by then accepted it as the story's own position rather than the character's.
**Example:**
> "You didn't come because you were working."
> "I was working."
> "You were in the car park. Karim saw you. You sat in the car."
> "I had calls. You know what that job is."
> She doesn't say anything. He says it again, more slowly, and adds a detail that is true.

**Yields to:** `arc.flat` — Flat arc: the Lie attacked belongs to the world.  
`arc.first_challenge`

### The Win That Rewards the Lie

**Also called:** the vindicated flaw, the lie that works, the successful bad behaviour
**What it is:** A scene in which the character deploys the Lie deliberately and it produces a real, visible success — the exact behaviour the story will later require them to abandon is publicly rewarded.
**Effect on the audience:** It removes the escape route of thinking the character is merely foolish. They have now seen the Lie pay, which means the later choice to drop it is a genuine sacrifice rather than the correction of an error.
**Used for and where it works best:** Anywhere in the first half, and mandatory in corruption and fall arcs where the audience has to understand the appeal. Distinct from `tens.false_victory`, which is the plot win that manufactures the next problem: this one is about the *belief* being confirmed, and it can be a small success in a scene the plot barely notices. Two rules. The reward must be witnessed by someone whose opinion the character values, because a private win reinforces nothing. And nobody in the scene may signal disapproval — the instant a character frowns at it, the story has editorialised and the audience stops evaluating for themselves.
**Best in:** formats: Feature Film, Novel, Limited Series, One-Hour Drama, Short Film, Series | genres: Crime, Gangster, Political, Workplace, Drama, Coming of Age, Addiction
**Avoid when:** Kids' work and fable, where the contract is that the wrong behaviour visibly fails (`theme.fable_contract`). Also avoid a second one: two rewarded wins and the audience concludes the story agrees with the Lie, so the eventual reversal reads as a late attack of nerves.
**Example:**
> He tells the buyer the survey came back clean. It did not. The sale completes on Friday.
> On Saturday his brother shakes his hand in front of their mother and says, "I told you he'd get it done."

**Yields to:** `theme.fable_contract` — Kids' work and fable, where wrong behaviour must fail.  
`arc.lie_rewarded`

### The Point of No Return

**Also called:** the closed door, the un-take-back-able act, the burnt bridge
**What it is:** The moment after which the character's old self is no longer available — not because they have changed, but because they have done something that cannot be undone or concealed.
**Effect on the audience:** Relief of a specific kind. The audience stops hoping for a reversal and starts watching for consequences, which is the switch that converts a meandering second half into a descent or a climb.
**Used for and where it works best:** Corruption, fall and crime arcs, and any story where the audience is waiting for the character to back out. The craft rule: make it an *act*, not a decision — something performed in the world, with a witness or a record. A resolve can be revised overnight; a signature, a confession, a body, a wire transfer or a resignation cannot. Second rule: the character must not understand at the time that it was the point of no return. Let them discover it two scenes later, when they try to go back and find the door shut. Sits near `struct.stc_break_two` in a positive arc and much later, at the third refusal, in `arc.fall`.
**Best in:** formats: Feature Film, Limited Series, Novel, One-Hour Drama, Game Narrative, Stage Play | genres: Crime, Gangster, Thriller, Tragedy, Political, Noir, War
**Avoid when:** Comedy of restoration and most family formats, where the pleasure is that everything can be put back. The failure mode is announcing it: a character who says "there's no going back now" has converted a structural fact into a line of dialogue, and the audience will notice the writer standing behind him.
**Example:**
> He puts the second name on the list. It is a name, in his handwriting, on a form with a reference number.
> Three scenes later he asks the clerk whether a submitted form can be amended. She says yes, of course — you file a correction, and it goes to the same committee.

`arc.point_of_no_return`

### The Self-Revelation

**Also called:** Truby's step 20, the moment of seeing, the insight, anagnorisis
**What it is:** The character sees, for the first time, what they have been doing and why — the Lie becomes visible to the person holding it. It is knowledge, not action, and it changes nothing by itself.
**Effect on the audience:** A held breath. The revelation raises the question the climax answers, which is not *do they understand* but *does understanding make any difference*.
**Used for and where it works best:** Immediately before the final confrontation in any positive arc, and immediately before the destruction in a fall arc, where the character sees it and is too late. The craft rules: it should arrive through an action of the character's own, usually a mistake with a visible cost, never through a speech from a friend; it should be short, because insight is instantaneous and prose that lingers turns it into a lecture; and it must be specific to *this* Lie, not a general improvement in maturity. The strongest version is silent and physical — the character stops doing something mid-gesture. Truby separates this from the choice that follows, and so should you: see `arc.the_choice` and `struct.truby_20_self_revelation`.
**Best in:** formats: Feature Film, Novel, Limited Series, Stage Play, Short Story, Animation Feature | genres: Drama, Tragedy, Coming of Age, Literary, Family Drama, Crime, Redemption
**Avoid when:** Flat arcs, where the protagonist has nothing to see and the revelation belongs to whoever they converted. Also avoid the doubled revelation, where the character realises the same thing twice in twenty pages — the second one tells the audience the first was not written properly.
**Example:**
> She is halfway through the same sentence she used on her sister in the first act — "I'm not asking you to understand, I'm asking you to —" — and she hears it.
> She stops. She does not finish it. She does not say anything else in the scene.

**Yields to:** `arc.flat` — Flat arc: the seeing belongs to whoever was converted.  
`arc.self_revelation`

### The Choice That Is the Change

**Also called:** the moral decision, Truby's step 21, the climactic election, the arc's verdict
**What it is:** The action taken after the revelation, in which the character chooses the Need over the Want in a situation constructed so that they cannot have both. The choice, not the insight, is the change.
**Effect on the audience:** The most reliable payoff available in narrative — and the one they check hardest, because it is the only place where change is demonstrated rather than claimed.
**Used for and where it works best:** The climax of every positive change arc, and inverted at the climax of `arc.corruption`. The construction rule: build the situation, not the speech. Design a scene in which the Want is actually available — on the table, one signature away — so that refusing it is a visible forfeiture. If the Want has already been lost by the time the choice arrives, there is no choice, only an acceptance. Second rule: the choice should be small and concrete in inverse proportion to how large the Lie was. Grand gestures are cheaper than they look; handing back one envelope in a quiet room outperforms a speech to a crowd every time. Sits at `struct.truby_21_moral_decision`; the price it incurs is `arc.cost_of_truth`.
**Best in:** formats: Feature Film, Novel, Limited Series, Animation Feature, Short Film, Stage Play, Game Narrative | genres: Drama, Redemption, Coming of Age, Crime, Romance, Social Drama, Sports, Faith
**Avoid when:** Stories whose argument is that the character has no meaningful choice — systemic tragedy, some war and migration work — where staging one implies an agency the piece is denying. The failure mode elsewhere is the rigged choice: both options turn out to lead to the same place, so the character elects nothing and the audience is asked to applaud a corridor.
**Example:**
> The contract is signed and in front of him. All he has to do is not mention the survey.
> "There's a problem with the survey."
> The buyer's solicitor looks up. His brother, who is in the room, does not.

**Yields to:** `arc.acceptance` — The piece argues the character has no agency.  
`arc.the_choice`

### The Proof Scene

**Also called:** the demonstration, showing the change, the small ordinary after
**What it is:** A short scene after the climax in which the character meets a version of the first-act situation and handles it differently — with no dialogue about having changed.
**Effect on the audience:** Belief. An audience accepts a transformation they are shown operating in an ordinary moment and distrusts one they are told about in an extraordinary one.
**Used for and where it works best:** The last three to five minutes of any positive or negative arc, and the highest-return scene available in a rewrite, because most drafts end on the climax and assert the rest. The craft rules: reuse a *specific* situation from the opening — the same room, the same request, the same phone call — so the audience has a direct comparison; keep the stakes low, because change is better proved in an unimportant moment than a decisive one; and let the character do the new thing without noticing it is new. Related shape: `end.mirror_ending`, the structural version of the same move.
**Best in:** formats: Feature Film, Novel, Animation Feature, Short Film, Limited Series, Picture Book, Kids Story | genres: Drama, Coming of Age, Family Drama, Redemption, Romance, Kids, Sports
**Avoid when:** Endings built on ambiguity, where proving the change closes a question the piece wants open, and in tragedy, where the proof scene is replaced by the absence of one. The failure mode is the proof scene that congratulates: another character present to observe and comment converts a demonstration into a testimonial.
**Example:**
> Act One: the phone rings during dinner and he takes it in the hall.
> Last scene: the phone rings during dinner. He looks at it. He puts it face down and passes the bread. Nobody at the table remarks on it, because nobody at the table knows there was a decision.

**Yields to:** `arc.unfinished_arc` — The ending must stay open or ambiguous.  
`arc.proof_scene`

---

## Arcs that are not one of the five

### The Growth Arc Without a Lie

**Also called:** the education arc, the capability arc, the maturation arc, learning rather than unlearning
**What it is:** The character holds no false belief — they simply lack knowledge, skill, confidence or experience, and the story supplies it. Nothing is unlearned; something is added.
**Effect on the audience:** Warmth without unease. It is the least threatening arc available, which is why it dominates children's work and why it reads as thin in adult drama.
**Used for and where it works best:** Kids' and preschool material, apprenticeship and sports stories, brand and explainer work where a customer must not be implied to be wrong, and the first instalment of a series that intends to install a real Lie-driven arc later. The craft rule that keeps it from going flat: the lack must cost something on the page before it is repaired — a failure with a consequence, not a montage of near-misses. And give the character one thing they are already good at, because an entirely incapable protagonist is a passenger. The education variant, where what is learned is about the world rather than about oneself, uses the same machinery and lands closer to `arc.disillusionment` the worse the world turns out to be.
**Best in:** formats: Picture Book, Kids Story, Preschool, Animated Series, Middle Grade, Animation Feature, Explainer, Educational | genres: Kids, Preschool, Coming of Age, Sports, Adventure, Educational, Fable, Family Drama
**Avoid when:** Adult drama with any thematic ambition. An audience over twelve reads pure capability growth as a story about nothing, because nobody was ever wrong. If the piece is for adults, find the Lie under the incapacity — it is almost always there, usually "I am not the kind of person who does this".
**Example:**
> She cannot tie the knot. She practises. In the middle of the book the boat comes loose because of her knot and the dog ends up in the water.
> At the end she ties it, badly but correctly, and checks it twice, which she did not do before.

**Yields to:** `arc.positive_change` — Adult drama: find the Lie under the incapacity.  
`arc.growth_no_lie`

### The Acceptance Arc

**Also called:** the arc of the unchangeable situation, adjustment, coming to terms, the reconciliation arc
**What it is:** Nothing in the world can be fixed — the illness, the death, the exile, the verdict stands — and the entire movement is in the character's relationship to it. They end holding the same facts differently.
**Effect on the audience:** A quiet that is hard to reach any other way. It is the only arc that gives an audience carrying an unfixable situation of their own something usable.
**Used for and where it works best:** Medical, grief, migration, heritage and late-life stories; memoir; documentary subjects where the outcome is historical fact and cannot be pretended open. The craft rule is to give the character something they *can* change, small and adjacent, and let them fight for that instead — the funeral, the language of the letter, who gets told first. Acceptance dramatised directly is inert; acceptance dramatised as the transfer of effort from the impossible thing to a possible one beside it is a scene. Second rule: the character must attempt a fix and fail, at full strength, or the ending reads as someone who never tried.
**Best in:** formats: Feature Film, Novel, Short Story, Memoir, Limited Series, Stage Play, Documentary, Audio Drama | genres: Medical, Family Drama, Migration, Heritage, Literary, Faith, Drama, Testimony
**Avoid when:** The situation is in fact changeable and the piece has simply not looked hard enough — then acceptance is fatalism, and in advocacy or journalism it is a political statement you may not have meant to make. The failure mode is the serene ending: a character who arrives at peace without visible loss has not accepted anything, they have been written around.
**Example:**
> "They're not going to reopen it."
> "No."
> "So what do you want to do?"
> "I want his name spelled right on the stone. It's got one 'n'."

**Yields to:** `arc.positive_change` — The situation is in fact changeable.  
`arc.acceptance`

### The Decision Arc

**Also called:** the arc toward a choice, the dilemma arc, the two-doors story, the arc with no transformation
**What it is:** The character does not change who they are; they arrive at a decision they could not have made at the start, because they did not yet know enough or were not yet under enough pressure. The movement is in the verdict, not the person.
**Effect on the audience:** Forward tension of a particular flavour — the audience is deciding alongside the character, and often disagrees with the outcome, which is a feature.
**Used for and where it works best:** Short film, one-hour drama, courtroom, medical and workplace stories, and interactive work, where the player's decision is the arc and a transformation would overwrite it. The craft rule: both options must have a named, specific advocate in the cast, and neither advocate may be a fool. Second rule, and it is what separates this from an argument: the character must shift *which question they are answering* — they begin asking "which is safer" and end asking "which can I live with". That shift is the arc. Related: `char.protagonist_who_is_wrong`, for when the decision they reach is the wrong one and the story knows it.
**Best in:** formats: Short Film, One-Hour Drama, Stage Play, Short Story, Game Narrative, Interactive Fiction, Visual Novel, Monologue | genres: Courtroom, Medical, Workplace, Political, Drama, Social Drama, Science Fiction, Mystery
**Avoid when:** Features and novels, where a decision arc across two hours leaves the character exactly where they started and the audience asks what the piece was for. There, a decision arc is usually an act, not a story. The failure mode is the decision made offstage and reported, which turns the whole build-up into setup for a summary.
**Example:**
> Morning: "If I sign it, am I liable?"
> Evening: "If I sign it, who has to read it in ten years?"
> She signs it. The film ends before we learn whether she was right.

**Yields to:** `arc.positive_change` — Feature or novel length needs transformation.  
`arc.decision_arc`

### The Double Arc

**Also called:** the crossing arcs, the exchange, opposite directions, the trade
**What it is:** Two characters run arcs that move in opposite directions through the same events — one toward the Truth, one toward the Lie — and cross at a scene they share.
**Effect on the audience:** Argument without advocacy. The piece makes a claim about the world by showing the same pressures producing two outcomes, so nobody has to state the claim.
**Used for and where it works best:** Two-handers, buddy stories, sibling and marriage drama, war, and any piece whose theme is about circumstance rather than character. The craft rules: the two must share a starting condition the audience can see is identical, they must be given the same opportunity at least once, and the crossing point must be a single scene both are in — the moment they are briefly level. After the crossing, deliberately reduce the screen time of the one moving downward; an audience that watches a descent in equal detail begins to prefer it. Pairs with `theme.counter_example_character` and `arc.mirror_character`, both lighter versions carrying one full arc rather than two.
**Best in:** formats: Feature Film, Limited Series, Novel, Stage Play, One-Hour Drama, Anime | genres: Crime, War, Family Drama, Social Drama, Buddy, Tragedy, Political, Gangster
**Avoid when:** The runtime is under ninety minutes or the cast is above six. Two full arcs cost roughly a third of the script each, and at short length or wide cast one of them becomes a summary. The failure mode is symmetry: mapping the two arcs beat-for-beat produces a diagram the audience can read by the midpoint, after which they stop watching and start waiting.
**Example:**
> Both men are on the same landing, same night, same offer, same money.
> The scene they share is nine lines long and neither of them makes a decision in it. Everything after that is them not being in the same room.

**Yields to:** `arc.mirror_character` — Under ninety minutes, or cast above six.  
`arc.double_arc`

### The Group Arc

**Also called:** the collective arc, the ensemble change, the crew's transformation, the arc of a community
**What it is:** The unit of change is a group — a crew, a family, a village, a team — which begins holding a shared Lie and ends holding a shared Truth, while individuals within it may barely move at all.
**Effect on the audience:** Belonging, and a sense that the story is about a world rather than a person. It is also the only arc that can carry a large cast without anybody being short-changed.
**Used for and where it works best:** Heist, war, sports, workplace, disaster and community drama; games with companions; heritage work whose subject is a people rather than a figure. The unit is the people and their shared choice. Name the group's Lie as something the group *says* — a motto, a rule, a joke they all repeat — so the audience can hear it change; give exactly one member a full personal arc to act as the group's proxy; and stage the turn as collective action, never a vote. If the rules, documents and roles change without a collective choice, the arc-bearer is the institution and belongs to `arc.institutional_arc`. Build differentiation with `char.ensemble_grid`, because a group arc over an undifferentiated group is a mood.
**Best in:** formats: Feature Film, Limited Series, Series, Game Narrative, Animation Feature, Stage Play, Documentary Series | genres: Ensemble, Heist, War, Sports, Workplace, Survival, Heritage, Social Drama
**Avoid when:** The piece has a clear protagonist. A group arc bolted onto a single-lead story dilutes the lead's climax and produces the common note that the ending "belongs to everyone and no one". The failure mode is the group that changes by acclamation: one speech, everybody nods, and the audience counts the nods.
**Example:**
> The rule they repeat all film: "We don't go back for anyone. That's how we're still here."
> Nobody ever revokes it. In the last act four of them are simply already in the water, and the one who said it loudest is holding the rope.

**Yields to:** `arc.supporting_arc` — The piece has a clear single protagonist.  
`arc.group_arc`

---

## Arcs by unit

### The Episode Arc Against the Season Arc

**Also called:** the two-clock arc, micro and macro change, A-story arc versus spine
**What it is:** Two arcs running at different lengths: one that opens and closes within the episode, and one that moves a few centimetres per episode and resolves across the season.
**Effect on the audience:** Weekly satisfaction plus a reason to return — the two appetites television has to feed at once.
**Used for and where it works best:** Any returning series. The allocation rule that holds in practice: the episode arc belongs to a guest or secondary character, the season arc belongs to the lead, and the lead's movement in any single episode is one visible increment — a thing said that was not said before, a thing no longer done. Second rule: the season arc's increments must be *unequal*. Three flat episodes then a large move reads as a series with a plan; equal movement every week reads as a mechanism. Third: the episode arc should rhyme with the season arc's current increment, so the guest story does thematic work rather than filling time. Sits with `tens.season_long_pressure` and `emo.episode_emotional_shape`.
**Best in:** formats: One-Hour Drama, Series, Half-Hour Comedy, Animated Series, Anime, Web Series, Audio Drama, Podcast | genres: Crime, Medical, Workplace, Family Drama, Drama, Detective, Science Fiction
**Avoid when:** Limited series, which is a long film and should run one arc at feature scale. The failure mode is the season arc delivered entirely in the last two episodes: eight hours of episodic story followed by a transformation nobody watched accumulate.
**Example:**
> Episode 6 guest arc: a father admits to his son that he cannot read the forms. Closed by minute 48.
> Episode 6 lead arc, total movement: she asks a colleague for help. One line, eleven words. She has not done that in six episodes and does not remark on it.

**Yields to:** `arc.turn_placement` — Limited series: one arc at feature scale.  
`arc.episode_vs_season`

### The Borrowed Arc

**Also called:** the guest arc, the case-of-the-week transformation, arc by proxy, the procedural workaround
**What it is:** In a format where the lead cannot change, the arc is given to a character who appears for one episode — and the lead's fixed belief is what causes their change.
**Effect on the audience:** They receive a full arc every week while the series keeps the lead they came for. It is the engine that lets a procedural run for a decade without going static.
**Used for and where it works best:** Procedural, detective, medical and courtroom series, and the only clean way to run `arc.flat` at scale. The craft rules: the guest's Lie should be a version of the lead's own, so the episode reads as a comment on them; the lead must apply pressure without intending to teach anything; and the guest's change must cost the guest something, not the lead, or the format has no consequences. Make sure at least one guest a season is *not* converted, or the flat arc curdles into the smugness `arc.flat` warns about. Build the lead with `char.long_series_character` and the fixed supporting cast with `char.protected_static_role`.
**Best in:** formats: Procedural, One-Hour Drama, Series, Animated Series, Audio Drama, Short Story, Comics | genres: Procedural, Detective, Medical, Crime, Courtroom, Mystery, Workplace
**Avoid when:** Serialised prestige drama, where the audience expects the lead to move and a parade of transformed guests reads as the show avoiding its own subject. The failure mode is the guest who exists solely to be changed: give them a want that predates the episode and a life the lead does not enter, or `char.only_reacts` applies at guest scale.
**Example:**
> The witness will not name her employer. The detective does not persuade her; he says what he says to everybody, which is that he will write down exactly what she tells him and nothing else.
> She names him in the last scene. She loses the job. The detective is already on another floor and never learns.

**Yields to:** `arc.episode_vs_season` — Serialised prestige drama where the lead must move.  
`arc.borrowed_arc`

### The Arc Across a Trilogy or a Long Series

**Also called:** the multi-book arc, the series-long change, the nested arc, arcs in instalments
**What it is:** One overall arc split so that each instalment carries a complete sub-arc of its own — a distinct Lie, or a distinct facet of one Lie — while the whole moves the character further than any single book or film does.
**Effect on the audience:** Two satisfactions at different scales, and the specific loyalty that comes from having watched someone across years.
**Used for and where it works best:** Novel trilogies, serialised fiction, film series and long-running comics. The rule that prevents the standard failure: give each instalment its own complete Lie-to-Truth movement, and make the Truth of book one become the *new Lie* of book two by being over-applied. The boy who learns to trust people learns it too well and is betrayed; the woman who learns to stand alone can no longer let anyone in. That progression reads as a life rather than a checklist. Second rule: plot the internal and external conflicts separately — one resolves per book, one does not — or book one ends at the series' first plot point and nothing is complete.
**Best in:** formats: Novel, Serialised Fiction, Feature Film, Comics, Middle Grade, Animated Series, Game Narrative, Anime | genres: Fantasy, Science Fiction, Epic, Adventure, Coming of Age, Crime, Myth, Historical
**Avoid when:** The instalments were not planned as a set — a sequel commissioned after success has to begin with a fresh Lie rather than pretending the first arc was incomplete, which retroactively devalues the original ending. The failure mode is the reset: reinstating the character's book-one flaw in chapter two of book two, which teaches the reader that change in this series is temporary and cancels their investment in all of it.
**Example:**
> Book 1 lie: "I am safer alone." Truth earned: she lets one person in.
> Book 2 opens with her having let everyone in, running a house of twelve, unable to say no to any of them. Same Truth, over-applied, now the thing that is killing her.

**Yields to:** `arc.sequel_reopening` — Instalments were not planned as a set.  
`arc.multi_book`

### The Arc Under Sixty Seconds

**Also called:** the micro-arc, the single-turn arc, the short-form change, the beat that stands in for an arc — short *video*, not short prose (for flash fiction see `struct.flash_fiction`, for the prose poem `lyric.prose_poem`)
**What it is:** At sub-minute length there is no room for a Lie to be built, challenged and released, so the arc compresses to one visible turn — the character does, at the end, the single thing they refused at the start.
**Effect on the audience:** The sense of a complete story in a space that should not hold one, which is the whole currency of the format.
**Used for and where it works best:** Reels and Shorts, vertical micro-drama episodes, ads, PSAs and title-length pieces. The craft rules: establish the refusal as an *action* within the first few seconds, not a line about a character trait; apply exactly one pressure to it; and make the turn a repetition of the opening shot's situation with one element changed, so the audience reads the change without being told. In a vertical serial each episode carries one turn of this kind and the real arc accumulates across dozens of them — `char.vertical_archetype` handles that build, and `char.ten_second_person` handles the establishing. The commonest overreach is trying to fit a Lie: at this length you get behaviour, and the belief behind it has to be inferred.
**Shelf life:** dated (review 2027-09) — the sixty-to-ninety-second episode and the three-to-five-second hook window are current platform conventions, not craft facts, and both have moved twice in three years.
**Best in:** formats: Reels/Shorts, Vertical Micro-Drama, Short Film, Advertising, PSA, UGC Ad, Brand Film, Sketch | genres: Romance, Family Drama, Comedy, Drama, Advocacy, Lifestyle, Crime
**Avoid when:** The piece is a demonstration, a joke or a hook with no change in it — many good short-form pieces have no arc at all, and bolting a turn onto one costs the last four seconds, which is where the payoff lives. The failure mode is the caption doing the arc: text on screen announcing that she finally stood up for herself, over footage in which she does not.
**Example:**
> 0:02 — she moves her chair three inches away from the man on the bench and keeps her bag on her lap.
> 0:47 — same bench, same man, same shot. She puts the bag on the ground.

**Yields to:** `struct.flash_fiction` — The short piece is prose, not video.  
`arc.sub_minute`

### The Arc in a Lyric

**Also called:** the song arc, the changed chorus, the bridge turn, arc in three minutes of verse
**What it is:** The change is carried by the relationship between repeated sections: the chorus stays verbally identical while the verses and bridge alter what it means, so the last chorus is heard differently from the first.
**Effect on the audience:** Recognition without narration. A listener cannot follow a plot in a song but can feel a sentence change meaning underneath them, which is the strongest effect the form has.
**Used for and where it works best:** Song lyric, lyric video, music video and musical theatre; also the closing number of any kids' song where the child character has learned something. The craft rules: change one word of the final chorus at most, and preferably none — the shift belongs in the verses. Use verse one for the situation, verse two for the raised stake or the shifted vantage, and the bridge for the turn, which is the only place in a song where the singer may know something they did not know before. Do not narrate the change; narrate the last scene before it and let the chorus land on top. Pairs with `emo.song_emotional_beat` and `theme.song_claim`.
**Best in:** formats: Song Lyric, Lyric Video, Music Video, Musical Theatre, Kids Song, Audio Drama | genres: Romance, Buddy Love, Coming of Age, Heritage, Faith, Musical, Kids, Drama
**Avoid when:** Dance, chant and most preschool repetition songs, where the pleasure is that nothing changes and a bridge turn breaks the loop the child is enjoying. The failure mode is the explanatory bridge: eight bars in which the singer states the lesson, which is the songwriting form of `theme.explained_theme` and kills the last chorus dead.
**Example:**
> Chorus, both times: "I'll wait by the door like I always do."
> Verse 1 puts her inside the house. Verse 2 puts her outside it. The bridge is one image — the key under the pot, still there, untouched since March.
> Same nine words. The second time it is not a promise.

`arc.lyric_arc`

---

## Ensemble and secondary arcs

### The Supporting Character's Arc

**Also called:** the B-arc, the secondary transformation, the subplot arc, how much room to give
**What it is:** A full but compressed arc given to a non-lead — typically three scenes where the protagonist gets twelve — sized so that it comments on the main arc without competing with it.
**Effect on the audience:** The world gains depth and the theme gains a second data point, which is what stops a piece reading as a claim about one person.
**Used for and where it works best:** Features, one-hour drama and novels with a cast above four. The sizing rule: a supporting arc gets three scenes — the position stated, the position tested, the position changed — and the middle one shares a scene with the protagonist's own arc, so the two are welded rather than parallel. Give it to at most two characters; a third makes the piece an ensemble whether you intended one or not, and it should then be built as `arc.group_arc`. Do not confuse this with `char.supporting_character_want`, which every functional role gets: a want is one line, an arc is three scenes, and handing an arc to the waiter is the failure that card warns about.
**Best in:** formats: Feature Film, Novel, One-Hour Drama, Limited Series, Stage Play, Animation Feature | genres: Drama, Family Drama, Crime, Social Drama, Romantic Comedy, War, Workplace
**Avoid when:** Runtime under seventy minutes, vertical serials, and any piece whose lead arc is already struggling — a supporting arc is always cut first in the edit, so writing one into a tight script is writing a deleted scene. The failure mode is the arc that resolves after the protagonist's climax, which reads as the film not knowing it has finished.
**Example:**
> Scene 14: "I've been here nineteen years. I don't sign things I didn't write."
> Scene 51, the protagonist's crisis, in his office: "I didn't write it."
> Scene 78: he signs it, in front of two people, and then goes and tells his wife before anyone else can.

**Yields to:** `arc.group_arc` — A third character needs a full arc and you accept that the piece is now an ensemble; if the single lead must stay, cut the third arc down to a want, `char.supporting_character_want`.  
`arc.supporting_arc`

### Arc Collision

**Also called:** the shared scene problem, competing turning points, arc traffic, the two-climax scene
**What it is:** Two arcs require the same scene for their decisive beat — the same confrontation has to be the protagonist's choice and the supporting character's revelation — and one of them will be flattened unless the clash is deliberately staged.
**Effect on the audience:** When solved, the densest scene in the piece. When unsolved, a scene that feels overloaded and a second arc the audience remembers as having "just sort of ended".
**Used for and where it works best:** Any script with two or more arcs, and a thing to look for at outline stage rather than in the draft. Three solutions, in order of preference. Stagger them: move the secondary beat one scene earlier, so the audience finishes with one arc before the other turns. Subordinate them: make the secondary character's revelation the *cause* of the protagonist's choice, so the scene has one spine and two payoffs. Or split the scene across a cut, which is cheapest and weakest. What never works is playing both at full weight — an audience tracks one turn per scene, and they will take whichever comes with the louder action. Left unsolved at the end of a film it becomes `end.too_many_endings`.
**Best in:** formats: Feature Film, Limited Series, One-Hour Drama, Novel, Stage Play, Game Narrative | genres: Ensemble, Drama, Crime, Family Drama, Social Drama, War, Political
**Avoid when:** Two-handers and single-arc pieces, where there is nothing to collide and looking for it invents a problem. The most common real instance is a climax where the protagonist chooses and the antagonist is also redeemed: `anta.antagonist_arc` needs its own scene, usually the one before.
**Example:**
> Collision: in the hospital corridor he refuses the money *and* his sister admits she has been paying the fees for six years.
> Staggered: she admits it in the car park, two scenes earlier. By the time he refuses the money the audience already knows what refusing it will cost her, and the scene plays twice as hard with half the content.

`arc.collision`

---

## Working method and diagnosis

### Writing the Arc Backwards

**Also called:** end-first construction, reverse-engineering the arc, designing from the final choice
**What it is:** A method: write the climactic choice first, in full, as a scene — then derive the Lie, the Ghost, the Want and the opening behaviour from what that scene requires the character to have been.
**Effect on the audience:** Invisibly, inevitability. Arcs built forwards arrive at a climax the character has only approximately been prepared for; arcs built backwards produce first acts in which every detail is load-bearing.
**Used for and where it works best:** Outlining any Lie-driven arc, and the fastest repair for a draft whose ending feels unearned. The procedure: write the choice scene. Underline every belief it requires the character to be abandoning — that list is your Lie. Then write the first-act scene in which the character does the *opposite* of the climax, in the same kind of room, at no cost. Then place `arc.first_challenge` and `arc.lie_rewarded` between them. Truby's step one is the same instruction at story level (`struct.truby_01_end_first`). The discipline that makes it work: do not soften the climax to match the character you have already written — change the character.
**Best in:** formats: Feature Film, Novel, Limited Series, Animation Feature, Short Film, Stage Play, Game Narrative | genres: Drama, Crime, Coming of Age, Redemption, Tragedy, Social Drama, Thriller
**Avoid when:** Discovery drafting a first novel, or any piece whose subject you do not yet know. Fixing the ending too early on unfamiliar material produces a book that argues toward a conclusion you chose before you understood the question. Use it on the second draft instead, where it is at its most powerful.
**Example:**
> Climax written first: she tells the committee her own name should be on the list.
> Required belief being abandoned: "if they know it was me, I lose them."
> Act one, derived: she lets a colleague take the blame for a spelling error. It costs nobody anything. She sleeps fine.

`arc.write_backwards`

### The Arc Statement

**Also called:** the one-line arc, the arc logline, the from-to sentence, the character premise
**What it is:** A single sentence of the form *X believes A; by the end, at the cost of B, X acts as though C* — used as a test rather than as a description.
**Effect on the audience:** None directly. It is a writer's instrument, and its value is that it fails loudly when the arc is incoherent.
**Used for and where it works best:** Before outlining, before every rewrite, and in any room where a note is being argued about. The rules that keep it diagnostic rather than decorative: A and C must be incompatible, or there is no arc; B must be a specific loss that can be filmed, not "his innocence"; and the sentence must not contain the words learns, realises, grows, discovers or finally — all five are places where writers hide the absence of a mechanism. If you cannot write it in one sentence, the problem is not the sentence. For the belief half on its own, `char.lie_in_one_line` is the narrower tool.
**Best in:** formats: Feature Film, Novel, Limited Series, Television Pilot, Pitch Document, Animation Feature, Short Film | genres: Drama, Crime, Coming of Age, Romance, Social Drama, Redemption, Thriller
**Avoid when:** Pitching. It is a working test, not a selling line, and read aloud in a meeting it sounds mechanical. Also keep it out of the script bible where a director or an actor will find it, because it hands them the conclusion and removes the discovery they need to make themselves.
**Example:**
> Weak: "Sami learns to open up and finally lets people in."
> Working: "Sami believes that being needed is the only reason anyone stays; by the end, at the cost of the workshop and his brother's respect, he asks for help in front of people who cannot repay him."

**Yields to:** `char.lie_in_one_line` — Only the belief half is needed.  
`arc.arc_statement`

### The Arc Audit

**Also called:** the draft diagnosis, auditing for an arc that is not there, the four-scene check
**What it is:** A pass over a finished draft that tests whether an arc exists on the page rather than in the writer's head, by locating four specific scenes and reading only those.
**Effect on the audience:** It is how you find out, before they do, that the arc lives in your notes.
**Used for and where it works best:** Every second and third draft, and mandatory before any draft goes out. The procedure, in order. One: find the scene where the Lie is shown working and note the page. Two: find the first challenge to it. Three: find the choice. Four: find the proof. Print those four scenes and read them consecutively with nothing between them — if a stranger can describe the character's change from those pages alone, the arc is on the page. Two standard results. All four exist but sit in the last thirty pages, which means the first half is plot only. Or one of the four does not exist at all and the writer can nonetheless describe it fluently, which means it is in the bible, the pitch and the writer's memory but not in the script — a character document is not evidence. Related passes: `theme.thematic_audit`, and `char.only_reacts` for supporting roles that fail the same test.
**Best in:** formats: Feature Film, Novel, Limited Series, Television Pilot, One-Hour Drama, Stage Play, Animation Feature | genres: Drama, Crime, Family Drama, Social Drama, Coming of Age, Thriller, Redemption
**Avoid when:** A first draft. Auditing for structure before the material exists is the most efficient way to stop writing. Run it once the draft is complete, not while it is being made.
**Example:**
> Audit result, draft three: Lie working — p.9. First challenge — p.71. Choice — p.98. Proof — none.
> Diagnosis: sixty pages in which the character is never contradicted, and an ending nobody will believe. Repair: move the challenge to p.28 and write the proof scene, which does not yet exist and is four lines long.

`arc.arc_audit`

---

## Named failures

### The Told Revelation

**Also called:** the arc resolved by dialogue, the friend who explains you to yourself, the therapist scene, growth by information
**This is a named failure, not a recommendation.**
**What it is:** The character's self-revelation is delivered to them by another character in speech — someone names the Lie accurately, the character accepts it, and the arc closes on the strength of having been told.
**Effect on the audience:** They credit the change to the speaker rather than the character, and demote the protagonist to a passenger in their own story. Worse, they have now been told the theme, so the ending has nothing left to demonstrate.
**Used for and where it works best:** As a diagnosis. The repair is mechanical and reliable: keep the speech, move it to the middle of the story, and have the character *reject* it — then let the same insight arrive later through an action of their own with a cost attached. The insight is not wrong; its delivery system is. A second repair, useful in a rewrite, is to give the speech to a character who is right about the what and wrong about the why, so the protagonist has to correct them and discovers it while arguing. Related: `char.mouthpiece`, `theme.explained_theme`, `end.explained_ending`; the earned version is `arc.self_revelation`.
**Best in:** formats: — | genres: —
**Avoid when:** — the honest exceptions are kids' work below about age seven, where an adult naming the lesson is part of the contract, and therapy-set drama where the naming is the subject and is resisted. It hurts most in features and prestige drama, where a late confrontation scene exists purely so somebody can say what the film is about.
**Example:**
> Told: "You push everyone away because you decided at nine years old that it was safer. That's what this is." / "...You're right."
> Earned: nobody ever says it. He arrives at the hospital, is asked whether he is family, says yes, and then has to sit in a corridor for four hours with people he has been avoiding for a decade.

**Yields to:** `arc.self_revelation` — Repair: the insight arrives by the character's own act.  
`arc.told_revelation`

### The Arc the Plot Solves

**Also called:** the problem that removes itself, external resolution, the arc closed by an event, the convenient death
**This is a named failure, not a recommendation.**
**What it is:** The situation that required the character to change is removed by the plot — the antagonist dies, the money arrives, the illness resolves, the letter is intercepted — so the choice the arc was built toward never has to be made.
**Effect on the audience:** The specific deflation of a held breath released for nothing. They do not always identify what went wrong; they report that the ending "happened too easily", and they retroactively stop trusting the piece's earlier stakes.
**Used for and where it works best:** As a diagnosis, and it is more common than `end.deus_ex_machina` because it is subtler — the event is usually well planted, so the writer defends it as set up. Planting is not the issue; agency is. The test: delete the convenient event and ask whether the character would have had to choose. If they would, put the event *before* the choice and let it raise the price instead of removing it. The strongest single repair is to have the event happen and the choice still be required — the antagonist dies and the character must still decide whether to tell the truth about what they did.
**Best in:** formats: — | genres: —
**Avoid when:** — the legitimate version is a story whose argument is that individual agency is irrelevant, where the plot solving everything is the point and the character's superfluousness must be visible and painful. It hurts most in redemption and crime stories, whose whole contract was that a price would be paid.
**Example:**
> Failing: he has decided to confess. On the way to the station he learns the case has been dropped. The film ends with him going home, and we never see him confess to anything.
> Repaired: the case is dropped in the first scene of act three. He goes to the station anyway, and now nobody in his family can understand why.

**Yields to:** `arc.the_choice` — Repair: event happens, the choice is still required.  
`arc.plot_solved_arc`

### The Lie Nobody Attacks

**Also called:** the unpressured flaw, the arc with no opposition, the belief that is never tested, decorative backstory
**This is a named failure, not a recommendation.**
**What it is:** The character has a fully specified Lie, Ghost and Need — usually documented at length — and the plot never once applies force to any of them. The story happens next to the arc rather than through it.
**Effect on the audience:** A flat protagonist in an eventful film. Their complaint arrives as "I didn't care about him", which sends writers off to add sympathy beats and backstory, neither of which is the problem.
**Used for and where it works best:** As a diagnosis, and it is the most common structural fault in developed drafts by writers who have read the theory. Two tests. Take the Lie and ask which scene would be *easy* for the character if they did not hold it — if the answer is none, the plot does not touch the arc. Then check the antagonist: an opponent built from a genre template rather than from this character's specific weakness cannot press on it except by accident. The repair is `char.tailored_opponent`, plus rewriting two mid-script obstacles so they can only be overcome by the behaviour the Lie forbids.
**Best in:** formats: — | genres: —
**Avoid when:** — there is no legitimate version; a Lie that is never attacked is a note, not a feature. It hurts most in thriller and action, where a strong plot engine hides the absence for two acts and the ending then has nothing internal to resolve.
**Example:**
> Symptom: her lie is "I don't need anyone." Across 104 pages she is never once in a situation she cannot get out of alone, and every ally is optional.
> Repair: on p.55 the door needs two people to open it, and the only other person in the building is the one she reported in act one.

**Yields to:** `char.tailored_opponent` — Repair: an opponent built from this Lie.  
`arc.unattacked_lie`

### The Arc That Peaks at the Midpoint

**Also called:** the early transformation, the spent arc, the third act with nothing to decide, premature change
**This is a named failure, not a recommendation.**
**What it is:** The character completes their change around the midpoint — sees the Lie, chooses against it, and is visibly different — leaving an entire second half in which the plot continues and the person has nothing left to do.
**Effect on the audience:** Boredom they attribute to the plot. The action can be escalating steeply and the film will still feel as though it is coasting, because the question they were actually tracking was answered forty minutes ago.
**Used for and where it works best:** As a diagnosis, usually of a draft whose midpoint got rewritten to be stronger. Two repairs. Demote the midpoint change to a *partial* one — the character grasps the Truth intellectually and immediately proves they cannot yet act on it, which puts `struct.stc_midpoint` back to doing its proper job. Or keep it and supply the second half's real question: they have changed, and must now find out what the change costs, which is a different story and needs a new want by page 60. What never works is a relapse inserted purely to reopen the question; that is `arc.padding_relapse`.
**Best in:** formats: — | genres: —
**Avoid when:** — the deliberate version exists in two-part structures and in some anime and kishōtenketsu-derived work, where the second movement is explicitly about consequences rather than choice. It hurts most in features, where the third act is contractually the hardest choice and there is nothing left to choose.
**Example:**
> p.58 — he tells his wife the truth about the money, cries, and is forgiven.
> pp.59–110 — a manhunt, during which the audience has no remaining question about him and is simply waiting to see whether he gets caught.

**Yields to:** `struct.stc_midpoint` — Repair: demote the midpoint change to partial.  
`arc.midpoint_peak`

### The Relapse as Padding

**Also called:** the second-act reopener, the manufactured backslide, the reset before the finale, the fake fall
**This is a named failure, not a recommendation.**
**What it is:** A relapse inserted after the character has already changed, not to test the change but to generate twenty more minutes — the character loses everything again, for reasons the arc did not require, and re-wins it.
**Effect on the audience:** They learn that this story will take things back, and they stop investing in outcomes. The damage is permanent within the piece: every subsequent reversal is discounted in advance.
**Used for and where it works best:** As a diagnosis. The distinction from the legitimate beat is precise and worth memorising: the real one, `char.relapse_beat`, is short, comes *before* the final choice, and is overruled inside the same scene at a cost. The padding version comes after the change has been proved, runs for a sequence or more, and is resolved by the character deciding again what they already decided. The test: remove it and check whether the ending still works. If it does, it was runtime. The usual root cause is a script fifteen pages short and a writer reaching for the only reversal they know they can stage.
**Best in:** formats: — | genres: —
**Avoid when:** — the legitimate long version is tragedy and addiction narrative, where the relapse is the ending rather than an obstacle, and recovery drama honestly about repetition, where the repetitions must differ from each other in something more than severity. It hurts most in redemption and sports stories, which are structurally the most tempted by it.
**Example:**
> Padding: he has been sober for the whole third act. At minute 96, for no reason the film has built, he drinks. At minute 104 he stops again, and the last scene proceeds exactly as it would have.
> Proving: at minute 88 the glass is already in his hand before the sentence has finished. He puts it down still full and leaves it on the table where everyone can see it, which is worse for him than drinking it would have been.

**Yields to:** `char.relapse_beat` — The legitimate short relapse before the final choice.  
`arc.padding_relapse`

---

## Coverage

41 cards. All `durable` except `arc.sub_minute`, which is `dated (review 2027-09)` because it rests on current platform episode lengths rather than on craft.

**The five arc shapes** — `arc.positive_change`, `arc.flat`, `arc.disillusionment`, `arc.fall`, `arc.corruption`. Two Truth-driven, three Lie-driven.

**The eight components** — `arc.the_lie`, `arc.the_ghost`, `arc.the_want`, `arc.the_need`, `arc.shared_want_opponent`, `arc.moral_line`, `arc.mirror_character`, `arc.cost_of_truth`.

**Deliberately not here, because they live in `char` or `theme`.** One home per technique:

- The relapse beat itself is `char.relapse_beat`; only its padding abuse is catalogued here.
- Change elided into a time jump is `char.offstage_change`; change asserted without cost is `char.unearned_change`.
- The opponent's own arc is `anta.antagonist_arc`.
- The character who exists as the counter-example is `theme.counter_example_character`, with `arc.mirror_character` as the in-file component.
- Writing the Lie down as one line is `char.lie_in_one_line`; building a lead who must never change is `char.long_series_character` and `char.protected_static_role`.

**Pairing note:** these components are the raw material for the genre kits, where each genre specifies which arc it usually carries — Horror runs on `arc.positive_change` under threat, Gangster on `arc.corruption`, Tragedy on `arc.fall`, Procedural on `arc.flat` plus `arc.borrowed_arc`.

**Still missing, recorded rather than hidden.** The arc of a narrator distinct from the arc of the character they are narrating; arcs in second person and in interactive fiction where the player, not the character, is the thing that changes; the arc of a real person in documentary and biography, where the change is a matter of evidence rather than design; and the arc of an institution treated as a character. None has a card anywhere in the database yet.

*Build notes from when this file was drafted — targets, running totals and what remained to be written — are kept verbatim in the [coverage history](../tools/history/coverage-history.md). They were true of the draft, not of the file, so they no longer sit here as if they were measurements.*

## Sources

Verified 2026-09-17.

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