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1/16/2026 // SUBJECT: Irreversible (2002) plot catalysts Processing: 1m 28.1sfull-failings-1
Source: Gemini 3.0 Flash + Search
Analysis: gemini-3-pro-preview
Timeline: Skipped
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#Q ORIGINAL QUESTION

Regarding the film Irreversible (2002), what actions start the plot in motion?

#M ANNOTATED LLM RESPONSE

The plot of Gaspar Noé's Irreversible (2002) is famously told in reverse chronological order. Because of this structure, there are two ways to answer what "starts" the plot: the events that open the movie cinematically and the events that set the tragedy in motion chronologically.

1. The Chronological Start (The Causality)

If we look at the story as it happens in real-time, the plot is set in motion by a series of domestic and social choices during a single day in Paris.

2. The Cinematic Start (The Narrative Hook)

The film actually opens near the end of the story’s timeline, immediately plunging the audience into the "motion" of a revenge mission.

Summary of Key Actions

The plot is set in motion by a "domino effect" of small and large choices:

  1. Marcus’s drug use and intoxication at the party.
  2. Alex’s decision to leave the party alone to avoid Marcus’s behavior.
  3. The choice to enter the underpass rather than taking a taxi or the street level.
  4. Marcus’s decision to seek vigilante justice rather than staying with Alex at the hospital, which shifts the plot from a tragedy into a revenge thriller.

#F CORRECTION FEED (CLICK TO SEARCH)

[1] The chronological beginning of the story is the scene in the park where Alex is reading a book ('An Experiment with Time') while children play. The apartment scene follows this event.
[2] The film does not show the result of the test on screen. Alex looks at it and smiles, implying a positive result, but the object itself is not shown to the audience.
[3] Alex explicitly describes this dream to Marcus in the apartment scene, serving as foreshadowing for the assault in the red underpass.
[4] The film opens with a prologue scene featuring 'The Butcher' (Philippe Nahon) from Noé's previous film 'I Stand Alone' talking to another man in a room. He delivers the film's tagline 'Time destroys all things' before the camera moves to the street.
[5] During the fight in the Rectum club, the man Marcus attacks overpowers him and breaks his arm before Pierre intervenes.
[6] Pierre is the character who uses the fire extinguisher to kill the man in the club, not Marcus.
[7] The man killed is not Le Tenia. The actual rapist, Le Tenia, is shown watching the murder from the background/sidelines.

#O MISSED POINTS & OVERSIGHTS

Medium
The Butcher Prologue

The summary omits the actual opening scene of the film (the prologue with Philippe Nahon), which establishes the thematic premise ('Time destroys all things').

Medium
The Park Scene (Chronological Start)

The summary incorrectly identifies the apartment scene as the chronological start. The true start is the park scene, where Alex reads 'An Experiment with Time', a book that explains the film's structure and themes.

#C RELATED QUERIES

#01 What is the significance of the book Alex is reading in the park in Irreversible?
#02 Who is the man in the opening scene of Irreversible talking about time?
#03 Does Alex actually take a pregnancy test on screen in Irreversible?

#S SOURCES

reddit.com drjosephsuglia.com cineoutsider.com columbiaspectator.com reddit.com spoilertown.com wikipedia.org reddit.com criterionforum.org flipsidestudios.net thequietus.com

#R ORIGINAL AI RESPONSE

#A DIRECT ANSWER (VERIFIED ANALYSIS)