"The Butterfly Effect" explores the concept of chaos theory, where small changes in initial conditions can lead to vastly different outcomes. The film follows Evan Treborn, who discovers he can travel back in time to alter significant moments in his life. However, each alteration leads to unintended and often disastrous consequences, highlighting the complexities of cause and effect. Ultimately, the movie suggests that while the desire to change the past is powerful, it can lead to unforeseen repercussions, emphasizing the importance of accepting one’s life as it is.

Yes, "The Butterfly Effect" has multiple endings. The theatrical version concludes with Evan (Ashton Kutcher) deciding to sacrifice himself to prevent the pain he's caused others, effectively erasing his existence. However, the director's cut offers an alternative ending where Evan, instead of taking his own life, chooses to confront his past, but the outcome remains tragic. These differing endings illustrate the film's themes of choice, consequence, and the impact of altering one's past.

"The Butterfly Effect" is not based on a true story; rather, it is a science fiction thriller that explores the concept of chaos theory, particularly the idea that small changes can lead to significant consequences. The film follows a young man who discovers he can travel back in time to alter events from his past, but each change leads to unexpected and often disastrous outcomes. While the film's premise is fictional, it draws on real scientific theories regarding time and causality.

"The Butterfly Effect" is not primarily a horror movie; it is a psychological thriller with elements of science fiction. Released in 2004, the film explores themes of time travel and the consequences of altering past events. It follows the protagonist, Evan Treborn, who discovers he can travel back to pivotal moments in his life but faces disturbing repercussions from his actions. While it contains tense and dark scenarios, its focus is on the psychological impact of choices rather than traditional horror elements.