"The Butterfly Effect" is a 2004 American psychological thriller film directed by Eric Bress and J. Mackye Gruber. The movie follows the story of Evan Treborn (played by Ashton Kutcher), a young man who suffers from a rare condition that prevents him from remembering his childhood. As Evan grows older, he begins to experience strange and unexplained events that lead him to discover that he has the ability to travel back in time and change the course of his life.