For Mookyul, an orphan living on the streets of Daegu, South Korea, street fighting is a way of life. But when he saves a beautiful young Korean man, Sae-Min, from a group of bullies, Mookyul attracts unwanted attention. The leader of the Korean Kkangpae mafia offers to absolve all of Mookyul's debt as well as giving him the chance to become a professional fighter - but every offer from the Kkangpae has a price. Is the chance at a life with Sae-Min worth the cost the Kkangpae will extract if Mookyul accepts their offer?