Crucial moments in Evan's (Ashton Kutcher) life are a black hole of memory as his childhood is marred by a series of terrifying events that he just can't seem to remember. When he discovers that he is able to travel back in time and alter events from his past, he begins to unravel intensely personal truths. In a bold attempt to save the people he loves, Evan decides to take a dangerous risk even if it means destroying everything he knows.