It's nearly Christmas in New York City but private investigator Mike Hammer (Biff Elliot) is out for vengeance when his closest friend Jack Williams (Robert Swanger) is murdered. Hammer vows to identify the killer ahead of the police, working his way through an increasingly large number of suspects. His starting point includes Jack's fiancée, a beautiful psychiatrist, twin socialite sisters, and a gangster. But as he tracks them down, so too does the murderer, creating a dangerous game of cat and mouse.