While attempting to flee from the FBI, the criminal Frank Dallio kills Detective McKenna's wife, Rachel. McKenna himself is shot in the face by the professional killer Lyle Mason, who dies in a car crash shortly thereafter. The FBI persuades McKenna to undergo facial surgery and take the place of Lyle Mason in order to find Dallio and a valuable microchip.
Scientists install a micro chip, called Black Cat, inside the brain of a violence prone girl named Catherine in an attempt to refine and control her fits of rage. Their plan is to turn her into the perfect government secret agent "killing machine".
