In this first film of the Lone Wolf and Cub series, adapted from the manga by Kazuo Koike, we are told the story of the Lone Wolf and Cub's origin. Ogami Itto, the official Shogunate executioner, has been framed for disloyalty to the Shogunate by the Yagyu clan, against whom he now is waging a one-man war, along with his infant son, Daigoro.
A family is brutally murdered in their own home and the official government's sake dealer is framed as a rebel by a corrupt member of the Shogun's Council of Elders. Young Lord decides to take on the Shogun's vile chief attendant.
In Asakusa, Tokyo, a couple of a violinist Yamano and a revue dancer Hanae lives in poverty. One day Hanae’s little sister rolls into their apartment and begins to stir things up with her riotousness.