
Brothers Kurt and Eric Sloan travel to Thailand, the birthplace of kickboxing, to prove to local fighters the superiority of the American school over the Thai school. Eric, the American kickboxing champion, meets Tong Po, the Thai champion, in a fight.
Tong Po proves to be a beast. He deliberately cripples the already exhausted Eric Sloan, condemning him to disability. Kurt enrolls in the training of Thai wrestling master Zen to defeat Tong Po and avenge his paralyzed brother.