Ryan Travers (Richard Norton) had recently been released from a five-year prison sentence for murder in Bangkok, Thailand. His parents are slain in an explosion by the local mob after refusing to pay protection money. Ryan's bad news gets worse when he learns his sister Katie (Erica Van Wagener) is sick and needs surgery. Ryan learns about a local underground combat ring and chooses to enroll to gain money for his sister's medical bills and seek vengeance.