Nearly 25 years after seeing his father killed by Hong Kong crime boss Raymond Zhang (Philip Chan Yan Kin), Chad Wagner (Jean-Claude Van Damme) is living in Los Angeles as a flourishing yet peaceful martial arts trainer. But Chad has a twin brother, Alex (also Van Damme), who suddenly reunites with his less-aggressive sibling and wants to avenge their father's death. As the pair plan their payback against Zhang, they also struggle to overcome their personal differences.