Raised as a slave, Danny is used to fighting for his survival. In fact, his "master," Bart, thinks of him as a pet and goes as far as leashing him with a collar so they can make money in fight clubs, where Danny is the main contender. When Bart's crew is in a car accident, Danny escapes and meets a blind, kindhearted piano tuner who takes him in and uses music to free the fighter's long-buried heart.
- Genre: Action, Crime
- Studio: Canal+, Rogue Pictures, TF1 Films Production, Current Entertainment, Clubdeal, EuropaCorp, Danny the Dog Productions, Qian Yian International
- Keyword: martial arts, fight, hitman, organized crime, serial killer, fighting, underground fighting, one against many, action hero, fight club
- Cast: Jet Li, Morgan Freeman, Bob Hoskins, Vincent Regan, Dylan Brown, Tamer Hassan