Lei Li lost his right-arm in a sword duel with the master of a martial arts school, long ago. Now, he is able to defend himself well with just his left arm, and kung fu techniques. That he proves with just the help of his friend Chung-Chieng, when he crosses his path with a beautiful girl in need, Pao Chiao. Even against impossible odds, he will prove a great warrior.

A Mogul king decides to take stealthy action to help overpower his greatest rivals. He chooses nine out thirteen of his loyal generals to embark on the mission. However, jealously amongst them sparks a treacherous family feud that could lead to catastrophic consequences for all involved.