Trained since youth in the art of Ninjutsu, the art and tactics of unconventional warfare purportedly learnt by Ninja, a young American soldier enters an illegal Vale Tudo (freestyle no holds barred) fighting contest in Hong Kong.
Don't expect too much on the thespian front, but 'Bloodsport' is a classic amongst martial arts fans for its superb fights with numerous styles, including Karate, Sumo, Muay Thai and Tae Kwon Do, and its grand climax in a bloody duel.