Shizuma, a former warrior from the Aizu Domain, is now a humble rickshaw driver in Tokyo, but the spirit of the samurai lives on within him. He searches for his fiancée, Sumie, who vanished during the Boshin War.
Impressed by Shizuma's contributions while helping the police with a case, Chief Superintendent Kawaji insists that he joins the force, and Shizuma soon finds himself working alongside Osanai as a police officer on patrol.