When two Hong Kong buddies become rivals for the same woman, their friendship ends, and they join rival tong gangs. Later, a tong boss cleverly conspires to use a motion picture company to cover illegal drug trafficking: Actresses are sent to Amsterdam for film roles not realizing that they carry cocaine shipments. Once in Holland, the actresses are sold into prostitution. Soon the faux film company shanghais the woman who put the two friends at odds. To save their beautiful damsel, the two ex-buddies must join forces and go on the offense.

Frank Dux has spent most his life being trained by Tanaka to participate in the Kumite, the ultimate martial arts tournament, where participants are seriously injured, even killed. Frank decides to go despite being told by his superiors in the army that he can't because they need him. Two army officers are sent to get him and the trail leads to Hong Kong but Frank eludes them. While Frank advances, he knows that he may have to face Chong Li, the defending champion, who has killed a few participants.