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1/9/2026 // SUBJECT: Irreversible (2002) - plot inciting incidents Processing: 1m 56.4s
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Analysis: claude-sonnet-4-5-20250929
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#Q ORIGINAL QUESTION

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

#M ANNOTATED LLM RESPONSE

To understand what "starts the plot in motion" in Irreversible (2002), one must distinguish between the narrative beginning (what the audience sees first) and the chronological beginning (the events that actually set the tragedy in motion).

Because the film is famously told in reverse chronological order, the plot "starts" with the consequence and ends with the cause.

1. The Narrative Start (As Presented to the Viewer)

The film opens with a sequence of chaotic, nauseating camera movements and low-frequency "infra-sound" designed to induce physical discomfort. The specific actions that initiate the viewing experience are:

2. The Chronological Start (The Root of the Conflict)

If the film is viewed linearly (as in the 2019 "Straight Cut"), the plot is set in motion by a series of mundane domestic actions and a fateful decision:

Summary of the Inciting Incident

The single action that truly "starts the plot in motion" in terms of narrative causality is Alex's decision to leave the party alone due to Marcus's behavior.

This leads directly to her brutal 9-minute assault in the tunnel, which in turn triggers the "reverse" plot of the film: Marcus's descent into a blind, drug-fueled rage as he forces a reluctant, intellectual Pierre to help him hunt down the perpetrator through the Parisian underworld.

#F CORRECTION FEED (CLICK TO SEARCH)

[1] This conceptual framing accurately describes the film's dual structure
[2] The reverse chronological structure is confirmed by all sources
[3] Sources confirm nauseating camera work and low-frequency sound designed to disorient, though 'infra-sound' is less commonly specified as a technical term
[4] The description of opening sequence structure is accurate
[5] Philippe Nahon playing the Butcher from I Stand Alone appears in the prologue discussing 'Time destroys everything' - confirmed by multiple sources
[6] The Rectum club scene with Marcus and Pierre searching for Le Ténia is consistently described across sources
[7] The fire extinguisher murder scene details are accurate, including that they kill the wrong man while Le Ténia watches
[8] The 2019 Straight Cut presents events chronologically, confirmed by multiple sources
[9] Alex discovers she is pregnant after Marcus leaves to buy liquor - confirmed in plot summaries
[10] The specific name 'Maison Carrée' for the party venue could not be confirmed in any sources consulted
[11] Marcus's drug use, drinking, and flirting at the party is confirmed by multiple sources
[12] Alex leaves the party alone, disgusted by Marcus's behavior, asking Pierre to look after him
[13] Alex encounters Le Ténia in an underpass where he is attacking a transgender prostitute named Concha
[14] This analysis accurately identifies Alex's decision to leave as the chronological inciting incident
[15] The 9-minute assault scene duration and its role triggering the revenge plot is confirmed

#O MISSED POINTS & OVERSIGHTS

Low
The specific character of Concha (the transgender prostitute) and her name

The summary mentions 'a sex worker' but sources identify her specifically as Concha, a transgender prostitute who later helps identify Le Ténia's location

Low
Pierre's reluctance and the contrast with Marcus's rage

While mentioned that Pierre is 'intellectual' and 'reluctant,' sources emphasize Pierre's attempts to reason with Marcus throughout and his hesitation before the violence

Medium
The prostitute advising Alex to take the underpass as 'safer'

One source mentions a woman/prostitute advises Alex the underpass is safer than crossing the street - this ironic detail adds to the tragedy but was not mentioned in the summary

#C RELATED QUERIES

#01 What is the official name of the party venue in Irreversible if any?
#02 Technical specifications of the infrasound frequency used in Irreversible opening
#03 Who advised Alex to take the underpass in Irreversible?

#S SOURCES

Irreversible (2002) ⭐ 7.3 | Crime, Drama, Mystery Irreversible (2002) - Plot - IMDb Irréversible - Wikipedia 'Irreversible' — Does It Work Better Chronologically? Irreversible (2002) : Movie Plot Ending Explained | This is Barry Irreversible (2002) summary & plot - Spoiler Town It Was a Tragedy, Now It’s a Drama: Gaspar Noé on Irreversible: Straight Cut | Screen Slate The Backward Marching of Time: Irréversible’s Straight Cut Reverses (and Ruins) Its Chronology Irreversible movie review & analysis (2002) - Cinelysium 'Irreversible: Straight Cut' re-edits the 2002 movie into chronological order Irréversible - Wikipedia Death Scene of the Week: The fire extinguisher death in Gaspar Noe's 'Irreversible' | Horror Cult Films Irreversible (Infinimata Press) Irreversible - Reeling Reviews Irreversible (2002) summary & plot - Spoiler Town Irreversible - CultureVulture : CultureVulture Irreversible movie review & film summary (2003) | Roger Ebert Irreversible (2002) - Plot - IMDb 'Irreversible' is 'unwatchable, horrible' | Gilroy Dispatch | Gilroy, California Irreversible (2002) - Parents guide - IMDb Irreversible (2002) ⭐ 7.3 | Crime, Drama, Mystery “Irreversible” Analysis: A Condemnation of Violence Against Women and its Depiction in Film Irreversible (2002) - User reviews - IMDb Irreversible (2002) summary & plot - Spoiler Town *That* Rape Scene: Revisiting Irréversible | by Conor Smyth | Medium How 'Irreversible' Shames Hollywood | Horror 'Irreversible,' the Most Upsetting Movie Ever Made, Just Got ... Irreversible (2002) - FilmAffinity Irreversible movie review & film summary (2003) | Roger Ebert After 20 Years, 'IRREVERSIBLE' Remains a Brutal Watch, No Matter How You Cut It - PopHorror Irréversible (2002) » PopMatters Irréversible - Wikipedia Phil on Film: Commentary Tracks - Irreversible Time Heals All Things: Irreversible and Reversing the Trauma of Sexual Assault Irreversible | Reviews | Screen Irreversible - Reeling Reviews Philippe Nahon - Wikipedia AboutFilm.com - Irreversible (2002) Irreversible (2002) - Philippe Nahon as L'homme - IMDb Irréversible - Infogalactic: the planetary knowledge core Irréversible - Wikipedia IRREVERSIBLE – Dennis Schwartz Reviews Irreversible – The Movie Bucket List Irreversible (2002) : Movie Plot Ending Explained | This is Barry Irréversible | BehaveNet Irreversible: Straight Cut review: New version of notorious French drama remains a difficult watch - AV Club IRREVERSIBLE - Movieguide | Movie Reviews for Families Irreversible (2002) - Plot - IMDb Irreversible – The Straight Cut Offers a New Perspective on a Controversial Classic - HeadStuff Irréversible (Film) - TV Tropes

#R ORIGINAL AI RESPONSE

#A DIRECT ANSWER (VERIFIED ANALYSIS)