U.S. soldier Frank Dux has come to Hong Kong to be accepted into the Kumite, a highly secret and extremely violent martial arts competition. While trying to gain access into the underground world of clandestine fighters, he also has to avoid military officers who consider him to be AWOL. After enduring a difficult training and beginning a romance with journalist Janice Kent, Frank is given the opportunity to fight. But can he survive? Bloodsport follows Frank Dux, an American martial artist serving in the military, who decides to leave the army to compete in a martial arts tournament in Hong Kong where fights to the death can occur.