After a global nuclear war leaves the world in ruins, gangs emerge as the new elite by seizing control of the city. Twin brothers Jimmy and Billy Lee survive the cataclysmic event with their martial arts abilities intact, but Billy's girlfriend is soon kidnapped by mysterious thugs. Now it's up to you to guide both brothers through different stages filled with enemies and boss characters. Whether you play solo or cooperatively with a friend, you must master new techniques and weapons to find the girl and defeat the bad guys.