# BBC-Earth narrative arc — reference

Reference document for structuring documentaries and longer-form films.
Claude reads this when asked to "build the structure" of a film.

## The six-beat universal arc

Almost every BBC Earth (and Attenborough-style) film follows the same
underlying shape, regardless of subject:

### 1. Exposition
**Purpose:** Establish the world. Show its rules, its scale, its texture.

- Wide establishing shots
- Voice-over thesis sentence ("This is the story of…")
- No conflict yet — pure atmosphere
- 10–20% of total runtime

### 2. Hero introduction
**Purpose:** Meet your protagonist. Give them a clear stake.

- First close-up. Face, hands, the thing they care about
- One line revealing what they want
- Establish them in their world
- 10–15% of total runtime

### 3. Villain pressure
**Purpose:** Name the obstacle. Make the stakes tangible.

- The thing that opposes the hero (person, condition, deadline,
  internal doubt)
- Show its scale or power
- Beat the stakes home — visualize the cost of failure
- 15–25% of total runtime

### 4. Valley
**Purpose:** The lowest moment. Doubt creeps in.

- Hero alone, contemplative
- Material setback or emotional collapse
- The film holds its breath
- This is where most amateur cuts drop the audience — keep it long enough
  to land but tight enough to maintain forward momentum
- 10–15% of total runtime

### 5. Crescendo
**Purpose:** Turning point. Energy rises. Resolution becomes possible.

- A choice, a key moment of agency
- Music swells, cuts get tighter, action accelerates
- The villain is engaged, not necessarily defeated
- 20–30% of total runtime

### 6. Release
**Purpose:** Resolution. What changed.

- Show the new equilibrium
- Don't over-explain — let the image do the work
- Final held shot of the protagonist
- 10–15% of total runtime

## Patterns inside each beat

- Start each beat on a wide establishing shot
- End each beat on a close-up of a face or hand
- Never cut on dialogue — cut on breath or beat changes
- Vary shot length: long-short-long-short across the beat

## Anti-patterns to avoid

- Front-loading exposition (more than 25% before hero meets stakes)
- Skipping the valley (audience needs the breath, even in a 3-min cut)
- A crescendo without prior valley reads as flat — the contrast is what creates feeling
- Symmetric pacing across all beats — boring; the crescendo should always
  be the longest, the release the most restrained

## Variations by film type

### Wedding (compress to ~7-9 min)
The arc is identical but compressed and emotional rather than narrative.
Exposition = prep, Hero = the couple, Villain = nerves/anticipation,
Valley = pre-ceremony quiet, Crescendo = vows + first dance, Release =
quiet exit.

### Founder documentary (~10-15 min)
Hero = founder, Villain = market/skeptics/funding, Valley = the failed
pivot, Crescendo = the breakthrough or pivot, Release = current scale.

### Architecture / craft documentary (~8-12 min)
Hero = the maker, Villain = the constraint (material, time, regulation),
Valley = the model pushed aside / scrapped iteration, Crescendo = the
build resuming, Release = opening day.

### Investigative documentary (~15-25 min)
Hero = the witness/journalist, Villain = the system being exposed,
Valley = the dead end, Crescendo = the discovery, Release = consequences.

## Pacing formula

If a film is N minutes, beat durations roughly:

| Beat | % of N |
|---|---|
| Exposition | 15% |
| Hero | 12% |
| Villain | 20% |
| Valley | 12% |
| Crescendo | 28% |
| Release | 13% |

So for a 10-min doc: 1.5 / 1.2 / 2.0 / 1.2 / 2.8 / 1.3 minutes.

Use this as a starting frame, then adjust based on what the material
actually wants.

## When asked to structure a film

Pull these patterns. Don't quote the document — use the structure as
internal scaffolding when composing the outline.