A vicious killer stalks the streets of Hong Kong, methodically executing top martial arts competitors. Xia (Donnie Yen), a convicted killer and kung fu expert, offers to help police find the killer and put him behind bars - in return for his own freedom. The killer eludes them again and again, taunting the cops - and Xia, his new target - to discover his next moves. Xia refuses to play his lethal game...until the killer threatens the woman he loves most.