Il lupo solitario vive in questo viaggio tre eventi legati al suo passato: una ragazza che ha perso la sua famiglia, una famiglia che ha perso il suo nome e un samurai che cerca la vera via del guerriero. Il finale è l'apoteosi della massima espressione di un film di samurai. Leggendario.
Ogami Ittō, the disgraced former ''shōgun''s executioner, or Kogi Kaishakunin, is traveling by river on a boat with his young son Daigoro floating behind in the baby cart. A young woman at the front of the boat, clearly distraught for some reason, accidentally drops a bundle into the water, which Daigoro retrieves. Ittō, draws his sword partway and notices in the reflection on the blade that some bamboo reeds are trailing the boat. Ittō is being followed by operatives of his mortal enemy, the Yagyū Clan – a constant threat that he can never ignore. Later, as Daigorou is relieving himself in a bamboo glade, Ittō slices some bamboo stalks, causing some ninja to fall from their perch.