Revenge of the Ninja plot
"400 years of training in the art of sudden death... unleashed on 20th century America."
Cho Osaki, a practitioner of the ninjitsu martial art, leaves his native Japan to put an end to his violent life. But after leaving for America with his son, he soon discovers that he cannot escape his past and his fate. Lieutenant Jack of the Los Angeles Police Department investigates several drug murders. Jack therefore seeks advice from the karate instructor of the police department. However, he sends him to his good friend Cho Osaki. With the necessary consequences...