A martial artist agrees to spy on a reclusive crime lord using his invitation to a tournament there as cover.

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?

A martial artist agrees to spy on a reclusive crime lord using his invitation to a tournament there as cover.