The butterfly effect a young man struggling to access sublimated childhood memories finds a technique that allows him to travel back to the past. Occupying his childhood body, he is able to change history. But every change he makes has unexpected consequences...the butterfly effect 2 after his girlfriend is killed in a car accident nick struggles to cope with the grief. He is tempted to use his ability to go back to the past to save her, but in messing with the past he causes dire consequences for the present. The butterfly effect 3 revelation sam's ability has been both a blessing and curse, he can help the police solve crimes, but can make no move to intervene in what he sees. But when a woman from his childhood comes begging for help in solving her sister's murder, he finds himself drawn to breaking his golden rule.