Act I
Setup & commitment
Establish the story’s world, inner pressure, dramatic promise, and the choice that crosses into the central pursuit.
- 01
Opening Image
A wall of ticking clocks and Doc's automated lab establish time as the film's governing pressure before Marty even appears.
- 02
Ordinary World / Setup
In 1985 Hill Valley, Marty's band is rejected while his defeated father George remains under Biff's thumb at work and at home.
- 03
Inner Pressure / Wound
Marty fears rejection and, more deeply, fears that he will grow into the same passivity he sees in his father.
- 04
Theme in Motion
Marty repeats the belief that people can change their future through commitment, a claim the story will test across two generations.
- 05
Inciting Incident
Doc unveils the DeLorean, the Libyan gunmen attack, and Marty escapes into 1955.
- 06
Disorientation / Debate
Stranded in 1955, Marty struggles to accept what happened and searches for the younger Doc Brown.
- 07
Guide / New Information
Marty proves his story with the flux capacitor drawing; Doc accepts that time travel is real.
- 08
Break into Act 2
Marty and Doc commit to harness the future lightning strike to send Marty home.
Act II-A
Expansion & promise
Explore the premise, develop secondary threads, test the plan, and drive toward a central reversal or revelation.
- 09
Secondary / Parallel Thread
Young Lorraine falls for Marty, whom she knows as Calvin Klein, forcing him to repair his parents' romance to preserve his own existence.
- 10
Fun & Games
Marty navigates 1955 Hill Valley High, escapes Biff in a skateboard chase, and tries to coach George toward confidence.
- 11
First Pinch Point
Biff's gang corners Marty, turning his comic improvisation in the past into a conflict with immediate physical and temporal stakes.
- 12
Approach to Inmost Cave
Doc calculates how the clock-tower lightning can power the DeLorean while Marty secretly writes a warning about Doc's future death.
- 13
Midpoint
As Marty's siblings fade from the photograph and Lorraine asks him to the dance, the damaged timeline becomes impossible to ignore.
Act II-B
Contraction & cost
Turn early progress against the characters as pressure, reversals, consequences, and apparent defeat narrow their options.
- 14
Renewed Drive / Plan in Motion
Marty and George plan a staged confrontation at the dance so George can rescue Lorraine and finally act with confidence.
- 15
Reversal / Betrayal
Biff interrupts the plan, has Marty locked in a car trunk, and threatens Lorraine for real.
- 16
Bad Guys Close In
Marty is locked in the musicians’ car while Biff takes his place with Lorraine; George arrives expecting a staged rescue.
- 17
Second Pinch Point
Biff beats George, but George returns and knocks him down, choosing courage without Marty’s coaching.
- 18
Apparent Defeat / Gauntlet
Marty begins to vanish onstage as George and Lorraine are separated before the decisive kiss.
- 19
All Is Lost
Marty collapses as the photograph empties—until George kisses Lorraine and restores the future.
Act III
Choice & resolution
Convert loss into a final choice, carry that choice through the climax, and show the resulting changed state.
- 20
Dark Night of the Soul
With his existence restored, Marty still faces the clock-tower deadline and Doc’s refusal to hear about 1985.
- 21
New Resolve / Break-into-Three
Marty sets the DeLorean to arrive early, choosing to risk the plan for another chance to warn Doc.
- 22
Final Preparations / Road Back
Doc races to reconnect the severed cable while Marty times the DeLorean's run toward the clock tower.
- 23
Final Battle / Climax
Lightning strikes at the predicted instant, sending 1.21 gigawatts through the DeLorean as it reaches 88 miles per hour and returns to 1985.
- 24
Final Choice / Payoff
Back in 1985, Marty discovers Doc read the repaired letter and wore a bulletproof vest.
- 25
Denouement / Return with Elixir
Doc survives, and Marty wakes to a family whose confidence and relationships were transformed by George's decisive night in 1955.
- 26
Final Image
Flying Delorean lifts off with Doc, Marty, and Jennifer—future wide open.