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Huang Fei-Hung, famous Chinese boxer, teaches his martial arts at Pao Chih Lin Institute, in Canton. Gordon is a European businessman, dealing in import and export, who's looking for a good bodyguard - for which he organizes a martial arts tournament. Mai Ken does not follow the advice of Huang, and finds himself up against a thug, Lin Tien-Tao, who wounds him in their match at the tournament. Li Tien-Tao and Teng-Hsi plan to rob Gordon's valuable jade collection that he is going to send by ship to Hong Kong, down the river from Canton. Li highjacks the ship and Gordon and his faithful men are dominated by Li's gang. Li takes the jade, but Huang Fei-Hung, who wishes to avenge the treacherous death of his friend Mai Ken, is waiting for him in the river's bank.