Young archaeologist Dr. Valerie Cammon and her colleague Dr. Kim go by ship to a volcanic island in the Mediterranean sea.
Two months later, Vincent and Dixie Camden intended to organize a man-hunt for cranky millionaires.
Four ex-convicts, Tim Nolan, Gwen Russell, Bob Crick and Ronnie Kaplan, are marooned at the shore and given 24 hours' headstart.
The following day the rich hunters arrive, having been informed that their targets are responsible for various crimes similar to their personal losses in their lives (Kaplan killed a woman in a drunk driving crash, Crick raped and murdered another woman, and Gwen hired a hitman to kill her husband, although Nolan was randomly selected as the intended fourth victim had a heart attack during the abduction).
Dr. Cammon runs into the surviving fugitives and helps Tim to find the magic sword of Hercules.