Fifth brother is separated from his kin whilst fighting the marauding Lao, and is nursed back to health in a monastery. He is befriended by Grinder, a monk whose job is to mill wheat. Fifth brother assumes the name of Ming Sau, and works on improving his fu. He is alternately helped and distracted by pretty Yue Lan. Meanwhile, the treacherous Lao continue their plans for conquest.
Após o assassinato de dois peritos de kung fu, Bruce Lee, um inspetor de polícia da Nova Zelândia, decide se envolver no caso, apesar de só estar em férias em Hong Kong. Na cena do crime mais recente, a vítima conseguiu arrancar um pingente de Buda do assassino. A ligação entre os dois assassinatos são as marcas estranhas no pescoço das vítimas, que podem estar relacionados a uma modalidade mortal de kung fu - o "Dedo de Ferro".
Japanese occupation of China breeds an ill wind which stirs the wrath of China's greatest kung fu killers.
An action film directed by Wei Lo.
