Bloodsport IV: The Dark Kumite

When martial arts expert and cop John Keller infiltrates death row to uncover the truth behind the execution of several inmates, he joins the ranks of prisoners forced to to fight in battles staged for pleasure by a sadistic warden. The best fighters are then turned over to Caesar, an eccentric underworld madman. Keller discovers that he must compete in the ancient Japanese event of Kumite, where fighters from different martial arts backgrounds battle for survival. Instead of fighting for honor, Caesar's Kumite is a spectacle of violence and death aimed at entertaining the most bloodthirsty of audiences.