Bloodsport is a 1988 American martial arts film directed by Newt Arnold. The film stars Jean-Claude Van Damme, with a supporting cast of Leah Ayres, Forest Whitaker, Donald Gibb, Roy Chiao, and Bolo Yeung. The film centers on Frank Dux (Van Damme), a United States Army Captain and ninjutsu practitioner who competes in an underground full-contact martial arts tournament called the Kumite in Hong Kong. Based on Dux's real-life claims, the film was marketed as a true story. It was one of Van Damme's first lead roles and showcased his abilities, launching his career as a mainstream action star.

Plot

U.S. Army Captain Frank Dux has trained in the ways of ninjutsu under his sensei Senzo Tanaka. As a boy, Dux and some of his friends broke into Tanaka's home to steal a katana, but Dux was apprehended while returning the katana to its place. Impressed by Dux's integrity and toughness, Senzo decided to train him alongside his son, Shingo. After Shingo's death, Senzo trains Dux as a member of the Tanaka clan. Dux is invited to the Kumite, an illegal martial arts tournament in Hong Kong. After his Army superiors refuse to let him go, Dux goes absent without leave, says goodbye to his sensei and leaves for Hong Kong. Two Criminal Investigation Command agents, Helmer and Rawlins, are assigned to track down and arrest Dux.