Zatoichi, Shintarō Katsu, enters a village that serves as a hub for family farms in a silk-growing region. The most influential figure is Boss Matsugoro, Hōsei Komatsu, a prosperous bully who looks set to bend the town to his will. The village is also home to a kindly doctor, Dr. Junan, Takashi Shimura, who lives with his daughter Oshizu, a quiet presence amid growing tensions. Matsugoro runs a thriving silk weaving operation, yet some of his workshops rely on debt bondage, and his control is strengthened by a local political appointment that widens his reach.
Into this uneasy balance arrive a group of fugitives, led by a woman named Oaki, Yumiko Nogawa. Among them is Ogano Genpachiro, Kyōsuke Machida, the disowned son of Dr. Junan, who caved to violence years earlier in Edo. The fugitives and Matsugoro strike a tacit deal: he will shelter them above his weaving factory in exchange for performing unspecified strong-arm favors when called upon.
There are tense clashes between Zatoichi and the fugitives at times, but Ogano steps between them, knowing Zatoichi could endanger his companions at a moment’s notice—recalling the moment Zatoichi sliced a snake in half as he happened to glimpse him eating lunch in the woods. The two sides reach a tense stalemate, and the blade-wielding wanderer remains a constant reminder of the village’s fragile peace.
A turning point comes when Zatoichi compels Matsugoro to permit a sick weaver to return home with her father, release her from compulsory service, and burn her bond papers. Matsugoro answers with brutal resolve, ordering his henchmen to dispose of the troublemaker, wounding Zatoichi in the process as the swordsman slips into hiding.
Believing Dr. Junan or Oshizu might know Zatoichi’s whereabouts, Matsugoro’s men brutalize the doctor; Junan refuses to betray the location, and Oshizu is taken away. When she won’t speak, she is stripped and hung up, a cruel display that prompts Zatoichi to intervene, rescuing Oshizu and Dr. Junan.
Though still weakened, Zatoichi defeats those holding them and directs a redeemed Oaki to lead Oshizu back to the factory. The danger shifts back to Matsugoro’s domain as some of his men pursue the three, forcing a desperate chase to safety. A large running sword battle erupts inside Matsugoro’s house, resulting in a cascade of killings, ending with Matsugoro falling to Zatoichi’s blade after the prolonged struggle.
Emerging from the house, Zatoichi confronts the remaining fugitives; he dispatches them one by one until only Ogano remains. Just as their duel is about to begin, Oshizu and Dr. Junan arrive to witness Zatoichi defeat Ogano with swift precision.
Oshizu cradles her brother’s dead body as Zatoichi steps back, fading into the margins of the village once more, alone again as the scene fades on a quiet refrain.
> only the cicadas cry...
