May Munro is a woman obsessed with getting revenge on the people who murdered her parents when she was still a girl. She hires Ray Quick, a retired explosives expert to kill her parent's killers. When Ned Trent, embittered ex-partner of Quick's is assigned to protect one of Quick's potential victims, a deadly game of cat and mouse ensues.

In Miami, Florida, biker gang leader Edward "Diablo" Santer is about to be executed for murder when he proclaims his innocence and vows revenge from the grave. When a mysterious biker comes to town during Spring Break festivities, leaving several teenagers electrocuted to death, some begin to suspect that Santer has made good on his promise.