Retired samurai Kumosuke lives quietly, not to say idly, in Edo (old Tokyo) with his wife and two children, a young boy named Shinnosuke and an infant girl, Ohana. While he nominally runs a courier business to earn a living, he seems to spend most of his time smoking his pipe, drinking sake, and chasing women. The arrival of a Shinsengumi squad led by a young swordswman, Ichimonji Hyougo, disrupts this peaceful routine, forcing Kumosuke to defend himself.

Depicts the bloody siege of the fortress of Port Arthur, one of the most strongly fortified positions in the world, during the Russo-Japanese War of (1904 - 1905). In the story dominated the character Lt Takeshi Kogyo (Teruhiko Aoi), teachers, and a reserve officer who became commander of the platoon and later company. At the same time monitors the conduct of the army commander general Nogi (Tatsuya Nakadai), which was commissioned of the emperor Matsuhito (Toshirô Mifune) to the conquest of the fort.