A young man struggles to access sublimated childhood memories. He finds a technique that allows him to travel back into the past, to occupy his childhood body and change history. However, he soon finds that every change he makes has unexpected consequences.

The Butterfly Effect poster

The Butterfly Effect (2004)

Change one thing. Change everything.

★ 7.6/10 January 17, 2004 113 min

Science FictionThriller

Director: J. Mackye Gruber, Eric Bress  ·  Writers: J. Mackye Gruber, Eric Bress

A young man struggles to access sublimated childhood memories. He finds a technique that allows him to travel back into the past, to occupy his childhood body and change history. However, he soon finds that every change he makes has unexpected consequences.

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Trailer

Director

J. Mackye Gruber J. Mackye Gruber Eric Bress Eric Bress

Cast

Ashton Kutcher Ashton Kutcher Evan Treborn Amy Smart Amy Smart Kayleigh Miller Melora Walters Melora Walters Andrea Treborn Elden Henson Elden Henson Lenny Kagan William Lee Scott William Lee Scott Tommy Miller Eric Stoltz Eric Stoltz George Miller Ethan Suplee Ethan Suplee Thumper Logan Lerman Logan Lerman Evan Treborn age 7 John Patrick Amedori John Patrick Amedori Evan Treborn age 13 Irina Gorovaia Irina Gorovaia Kayleigh age 13 Kevin G. Schmidt Kevin G. Schmidt Lenny age 13 Jesse James Jesse James Tommy age 13

User Reviews (3)

John Chard
John Chard April 26, 2020
★ 8/10

You can't change who people are without destroying who they were. The Butterfly Effect - Directors Cut The Butterfly Effect is directed by Eric Bress and Bress co-writes the screenplay with J. Mackye Gruber. It stars Ashton Kutcher, Melora Walters, Amy Smart, Elden Henson, William Lee Scott, Eric Stoltz and Ethan Suplee. Music is by Michael Suby and cinematography by Matthew F. Leonetti. The title refers to the butterfly effect, the chaos theory of a popular hypothetical situation that illustrates how small initial differences may lead to large unforeseen consequences over time. The plot pitches Kutcher as Evan Treborn who suffers blackouts during critical mments in his life. When older he finds that through reading the journals he has written since a child, that he can go back in time to the significant events and change what happens. Unfortunately each time he does it come…

CinemaSerf
CinemaSerf August 12, 2024
★ 7/10

"Evan" (Ashton Kutcher) has had a troubled existence thus far in his young life, and is prone to blackouts. These seem to take chunks of his day away from him as he comes back to a consciousness unaware of what has just taken place, or even where he is! He tries to fill in the gaps by writing in his journal what could have happened then miraculously finds himself back at that exact time and place. It's almost as if these memory lapses were just missing pieces of his jigsaw puzzle that he must go and relive, retrospectively, and infill. The thing is, though, he doesn't readily consider the impact that these additional experiences may have on future events. Basically his actions could change the course of history. It's really his beloved "Kayleigh" (Amy Smart) he is determined to keep safe - and that's quite a task as their childhood antics have frequently caused quite a few tragic events …

AlfaVitaY2K
AlfaVitaY2K May 29, 2026
★ 10/10

A brutal, high concept psychological Sci-Fi thriller that’s genuinely genius. Ashton Kutcher delivers his best dramatic performance as Evan Treborn, a man who discovers he can rewrite his traumatic past through his diary, only to cause cascading disasters in the present. Smart script, tight direction by Eric Bress and J. Mackye Gruber, and a relentless downward spiral that keeps you hooked. The original theatrical ending is perfect. Bleak, logical, and thematically airtight. It respects the butterfly effect premise without cheapening it. The director added several absurd, jokey alternate endings for the DVD release purely for fun. Somehow, a vocal group of weird people insists those half-baked versions are “better.” Verdict: 10/10. Cult classic. Watch it. Accept the real ending. Avoid the weirdos. Theatrical / Original Ending / Logic It respects the core rules of the mo…