One-eyed, one-armed ronin Samanosuke (Kinnosuke Nakamura) takes the name Tange Sazen after following a bitter betrayal, and defends a stolen urn containing the secret to a treasure of gold coins against legions of fierce attackers. When a powerful Shogunate minister comes looking for the treasure with his sword drawn, Tange Sazen puts his new, one-handed fighting technique to the ultimate test.