After a girl is assaulted on the highway Zatoichi finds himself acting as midwife to a dying woman. He heads for a nearby village to deliver the baby to its father, Satoro, but on the way is cheated and stoned by local people. Satoro's sister is about to become a sex slave because of an unpaid debt but Zatoichi resolves this problem only to become confronted with more and has to resort to his martial arts skills...