American soldier and martial arts master Frank Dux gets an invitation to "The Kumite," an illegal martial arts tournament in Hong Kong, where only the world's best fighters are invited. While eluding American agents set on bringing him back to the U.S., Frank enters the competition, which no Westerner has even won before.

American soldier and martial arts master Frank Dux gets an invitation to "The Kumite," an illegal martial arts tournament in Hong Kong, where only the world's best fighters are invited. While eluding American agents set on bringing him back to the U.S., Frank enters the competition, which no Westerner has even won before.