Ryan Travers (Richard Norton) has just been released from a Bangkok prison following a five-year sentence for murder. His parents, who are operating an antique shop in the neighborhood while awaiting their son's release, are killed in an explosion set off by the local mafia for refusing to pay protection money. Ryan's terrible news worsens when he learns that his sister Katie (Erica Van Wagener) is gravely ill and will require surgery. With no prospects for employment upon his release, Ryan discovers a local underground fight ring and chooses to join in order to acquire money for his sister's medical bills and seek vengeance.