The man, Sam Reide, discovers that his girlfriend, Jenna, was killed by a serial killer named the Rain Killer who has been terrorizing the city for years. Sam uses his ability to time travel, but each time he changes something in the past, it has unintended consequences on the present.
Sam is joined by Detective Glenn Hodges and they work together to try and prevent the Rain Killer from striking again, as well as clear the name of an innocent man who was wrongly accused and put on death row. Along the way, they discover disturbing secrets about the killer's past and his motivations for his crimes.
As Sam struggles to prevent the deaths of innocent people, he soon realizes that his actions have also unleashed a new, more dangerous threat. The Butterfly Effect 3: Revelations is a twisty thriller that explores the consequences of our actions and the dangers of playing with time.