When a scientists daughter is kidnapped, American Ninja (David Bradley), attempts to find her, but this time he teams up with a youngster he has trained in the ways of the ninja.

The young daughter of a politician runs away due to lack of attention. She hides in the car of two not too bright crooks who are slowly converted into parent figures as the police web closes down on the supposed kidnappers.

Eddie Lomax (Van Damme) is a vetern soldier sick of life, wandering the desert looking for a reason to die. An incident with a few thugs from the nearby town who steal Eddies motorbike and beat him almost to death, starts in Eddie a flame for revenge. Helped by Mr. Early, and some other good fellows, Eddie is out for vengeance.

After thief Alex Cardo gets caught while stealing an ancient katana in East Asia, he soon finds himself imprisoned and beaten up by the crowd there. Especially one of the guards, Demien, feels upset by Alex appearance and tortures him as often as he gets the opportunity. Alex finds one friend and mentor in the jailhouse, Master Sun, who teaches him a superior fighting style called Iron Hand. When a 'best of the best kumite' is to take place, Demien gets an invitation. Now Master Sun and Alex need to find a way to let Alex take part in the kumite too.

Bloodsport III brings us back to the world of Alex Cardo. This time he must battle in a fight to end all fights - The Kumite, the most vicious warrior alive - Beast. He must not only battle for his own honor, but also avenge the death of Sun, his mentor, teacher, and spiritual "father", when Sun is spitefully killed by crime boss Duvalier. In order to defeat Beast, destroy Duvalier, and avenge Sun's death, Alex turns to Leung to whom he was indebted in Bloodsport II. Leung directs him to the great shaman, Makato "the Judge", to whom Alex must turn for guidance. The judge teaches him to fully channel the energy in his mind and body in order to rout the Beast in the Kumite...

Sissy Hankshaw is born with enormous thumbs that help her hitchhiking through the US from a young age...

On her deathbed, a mother makes her son promise never to get married, which scars him with psychological blocks to a commitment with his girlfriend. They finally decide to tie the knot in Vegas, but a wealthy gambler arranges for the man to lose $65K in a poker game and offers to clear the debt for a weekend with his fiancée. Suddenly the man is insanely jealous, and pursues his fiancée and her rich companion, but finds pitfalls in his path as the gambler tries to delay his interference.