Joe Armstrong, an orphaned drifter will little respect for much other than martial arts, finds himself on an American Army base in The Philippines after a judge gives him a choice of enlistment or prison. On one of his first missions driving a convoy, his platoon is attacked by a group of rebels who try to steal the weapons the platoon is transporting and kidnap the base colonel’s daughter.
After his family is killed in Japan by ninjas, Cho and his son Kane come to America to start a new life. He opens a doll shop but is unwittingly importing heroin in the dolls. When he finds out that his friend has betrayed him, Cho must prepare for the ultimate battle he has ever been involved in.
A female aerobic instructor is possessed by an evil spirit of a fallen ninja when coming to his aid. The spirit seeks revenge on those who killed him and uses the female instructor’s body to carry out his mission. The only way the spirit will leave aerobic instructor’s body is with the help of another ninja.