When an accident involving a folding machine at an old laundry happens, detective John Hunton investigates. As his investigation progresses, he begins to suspect the machine is possessed by a demon from Hell.
An American ninja's wife is held hostage by a sadistic Nazi chemist on an Asian island. He teams up with an African-American ninja to rescue her.
Two former ranking figures of the Axis powers (the evil General Von Rudloff and Japanese master Miyagi) schedule a deadly martial arts tournament in Von Rudloff's desert castle. They race to assemble the top competitors from around the world, with the rebellious Steve Hunt being the most sought after.
