On the dark path of swordsmanship in a "Futuristic" yet Feudal Japan, it is said that the one who becomes No.1 will rule the world. But the only rule in this world is that only the No. 2 is allowed to fight the No. 1. The No. 2, the Afro Samurai, travels the road looking for revenge on the man who murdered his father in front of him when he was just a boy, a three-armed gunman who is the lord of the dark swordsman's road and the current No. 1.