3 boys are told they are Japanese orphans and raised by I-Ho Ninja Society. They learn they are Chinese and the Society tries to kill them. This movie has been condensed from a three part series.

Learning of childhood friend Meihua's death, Lingling goes to Japan to find Meihua's sister, Meifeng. Brutal gangsters demand Lingling return an item Meihua stole, and hold Meifeng hostage. Old friends help Lingling confront the gang.