Hoping to emulate the fighting style of his formidable uncle and to avenge the death of his father, young Shaio Ping (Yi-min Li) nurses a fallen master (Chang Yi) back to health and trains in the ancient art of Mantis-style kung fu. But when they return home, Ping's uncle tells him a shocking secret about the mysterious aging master. This martial arts revenge thriller is based on the 1969 spaghetti western Days of Wrath.