After suffering a concussion from a grenade blast in 'Nam, Sgt. Frank Johnson has been getting flashes of his childhood. He is a ninja in those dreams. Because of this, he is given a codename: "Black Fire" by the US Army and is sent to San Sebastian together with his buddy Sgt. Jim Anderson to work as U.S. military advisers. One night, Sgt. Johnson discovers Capt. Salcedo trying to transport arms.