Left for dead in Vietnam, Lieutenant Cotter became a guinea pig for KGB baddie Mitovitch. Implanted with a mind control microchip, he is turned into a mindless killer. His colleague Lieutenant Sanders goes looking for him in Cambodia, then in El Salvador, where they kill pretty much everyone they meet.

In this sequel, Scott Wylde, an American kickboxer, must go to Cambodia to rescue his Vietnamese girlfriend from Russian and Vietnamese troops.