Many years ago Mr. 6 was an infamous gangster. That was when there was still such a thing as honour amongst thieves, when wrongdoers made respect as well as kept principles. Nowadays Mr. Six is just about forgotten, a living relic residing in a slim alley. Someday Six's child, Xiaobo, is abducted by some spoiled punks after he damages their precious Ferrari. Mr. Six recognizes that he needs to do whatever it requires to obtain his child back-- even if that means returning to the life he thought he had left.