A young boy teams with the American ninja to rescue a damsel in distress in the fifth installment of the popular martial arts franchise. When villains abduct a scientist's lovely daughter, it's up to the American ninja (David Bradley) and his protégé, Hiro (Junior National Karate Champion Lee Reyes), to save the girl and make her kidnappers pay for their crime. The supporting cast includes Noriyuki "Pat" Morita and Vincent Perez.