The plot centers on Inukai Heishirō (Mitsuru Fukikoshi), the son of a clan officer. One of his clan's most precious heirlooms, a sword given them by the Shogun, has been stolen by the samurai Kazamatsuri (Tomoyasu Hotei). Against his father's advice, Heishirō insists on retrieving the sword himself. His father sends two ninja after him to make sure he doesn't do anything stupid.