The Yang family, men and women, have served their country loyally for generations. During the war General Yang is ambushed and killed. His widow and the entire family set out to avenge his death and defend the country.
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.