It's time to fight back.
One year after the events of 'Kickboxer: Vengeance', Kurt Sloan has vowed never to return to Thailand. However, while gearing up for a MMA title shot, he finds himself sedated and forced back into Thailand, this time in prison. He is there because the ones responsible want him to face a 6'8 400 lbs. beast named Mongkut and in return for the fight, Kurt will get two million dollars and his freedom back.