Um a guy called slevin goes to visit his friend nick and gets mistaken for him and then basically he owes two rival mob bosses 96,000 and 33,000 dollars (they might not be the right amounts) and for the one mob boss he has to kill the other bosses son to wipeout the debt becasue of this guy called goodcat, there is kind of two much to explain for the story to be understandable and what i have explained ive sort of told it without revealing the big twist, mwahahaha