Jimmy Garren, a former Tae Kwon Do world champion, is now retired and a widowed father to ten-year-old Katie. So when he's challenged by a famous cage fighter-and former rival Nick "the Nasty" Harper-to a fight, he refuses...until Katie is kidnapped by Harper's crew. With the match being the only way to save his daughter, Jimmy travels to Brazil to train with world-renowned MMA fighter Renzo Gracie for a deadly fight in the cage...that only one man will survive.