How to write your script with 120min runtime, a structured planning for any genre

Writing a 120-minute (120-page) script requires a clear structural blueprint. 

The industry standard is 1 page = 1 minute of screen time. Here's a structured planning guide that works for any genre:

Core Framework: Three-Act Structure (120 pages)


Act

Pages

Runtime

% of Script

Purpose

Act 1: Setup

1–30

0–30 min

25%

Establish protagonist, world, inciting incident, act break

Act 2: Confrontation

31–90

30–90 min

50%

Rising action, midpoint, betrayal, lowest point

Act 3: Resolution

91–120

90–120 min

25%

Climax, fallout, coda


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15-Beat "Save the Cat" Breakdown (Perfect for 120 Pages)


Beat

Page

What Happens

1. Opening Image

1

Visual snapshot of protagonist's ordinary world

2. Theme Stated

5

Someone hints at the story's lesson

3. Set-Up

1–10

Introduce characters, flaws, wants, world

4. Catalyst (Inciting Incident)

12–15

Life-changing event disrupts ordinary world .

5. Debate

15–25

Protagonist hesitates before committing

6. Break into Act 2

25–30

Protagonist chooses the journey; no turning back .

7. B Story

~30

Supporting relationship/subplot begins

8. Fun & Games

30–55

Genre promise—comedy gags, thriller chases, romance tension .

9. Midpoint

~60

False victory/defeat; stakes rise dramatically .

10. Bad Guys Close In

60–75

Antagonist gains ground; internal/external pressure

11. All Is Lost

~75–90

Lowest point; "whiff of death"Hope seems gone .

12. Dark Night of the Soul

90–95

Protagonist hits rock bottom, reflects

13. Break into Act 3

95–100

Protagonist discovers solution/lesson

14. Climax

100–115

Final showdown; protagonist applies lesson

15. Final Image

120

Contrast with Opening Image—shows transformation



Tip: Analyse this for any favourite film of yours to get a better idea.


Genre-Specific Adjustments


Genre

Structural Focus

Key Timing

Comedy

Premise-driven gags; character learns lesson

Fun & Games (30–55) packed with jokes; climax resolves relationship .

Thriller/Mystery

Escalating tension; clue placement

Inciting incident by p.15; ticking clock from midpoint; revelation at climax .

Horror

Dread-building; scare pacing

Threat introduced by p.20; escalating encounters; horror confrontation at climax 

Romance

Attraction→Conflict→Reunion

Meet-cute by p.10; forced separation at midpoint; reunion at climax

Drama

Character arc-driven; high stakes

Every scene must advance plot/character; no formulaic beats .

Action

Set pieces; clear hero's journey

Hero's Journey beats; more action description; climax = big battle .

Fantasy/Sci-Fi

World-building integration

Gradual world reveal; hero's journey; climax convergence 

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Step-by-Step Planning Process

1. Pre-Writing (Concept → Outline)

  1. Create your story concept (one-sentence logline)

  2. Develop characters (protagonist's want, flaw, need).

  3. Write a 1-page synopsis (beginning, middle, end)

  4. Create a beat sheet (15 beats above)

  5. Break into scene list (40 strong beats/scenes)

2. Writing the Draft

  • Use 12pt Courier font, standard margins

  • Scene heading format: EXT. LOCATION – DAY

  • Write in present tense.

  • Don't edit while writing—let ideas flow

3. Pacing Checklist

  • First 5 pages: Hook the reader immediately.

  • Page 15: Inciting incident (not past page 20).

  • Page 30: Act 1 break (protagonist chooses journey).

  • Page 60: Midpoint (stakes escalate).

  • Page 90: All is lost (lowest point).

  • Pages 100–115: Climax sequence

  • Page 120: Final image (show transformation)

4. Revision

  • Take a break before editing.

  • Check each scene advances plot OR character.

  • Ensure genre expectations are met (genre = why audience shows up; structure = why they stay)

  • Keep script under 120 pages—longer scripts are often rejected.

Quick Template for Your Script

text

ACT 1 (pp. 1–30)

- Opening Image (p.1)

- Set-up: Protagonist's world + flaw (pp. 1–10)

- Catalyst (p. 12–15)

- Debate (pp. 15–25)

- Break into Act 2 (p. 25–30)


ACT 2 (pp. 31–90)

- B Story begins (p. 30)

- Fun & Games / Genre promise (pp. 30–55)

- Midpoint (p. 60)

- Bad Guys Close In (pp. 60–75)

- All Is Lost (p. 75–90)

- Dark Night of the Soul (pp. 90–95)


ACT 3 (pp. 91–120)

- Break into Act 3 (pp. 95–100)

- Climax (pp. 100–115)

- Final Image (p. 120)

Key principle: Structure reveals character and plot; genre sets audience expectations. Study your genre's conventions but don't let gags/events replace story. The 3-act structure works because it creates a compelling trajectory with highs, lows, complications, and transformation


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