Gennosuke, guerreiro de um clã, mata um dos ministros do clã como parte de um plano revolucionário. Ele é perseguido por seus companheiros que buscam desesperadamente por vingança, porém Gennosuke recebe a ajuda de um mestre espadachim que poderá dar a ele uma chance de sobreviver.
The feud between two rival delivery companies, Kibamasa and Okiyama, heats up as the head of Kibamasa falls ill.
Assassination begins with the events of 1853 when "four black ships" anchored at Edo Bay, sparking civil unrest and the major political manoeuvring that saw the end of the Tokugawa Shogunate. At a time when assassination had become a disturbing political tool, Shinoda's film follows Hachiro Kiyokawa, an ambitious, masterless samurai whose allegiances drift dangerously between the Shogunate and the Emperor.
Misawa Ihei (Nagato) is traveling with his wife Tae (Iwashita Shima) who abhors the practice of sword fighting for prize money. Tae is the daughter of the clan's chief counselor who married the low-ranking Ihei to avoid becoming the clan lord's mistress. Into the mix comes Oba Gunjuro (Tetsurō Tamba), a mysterious ronin who will do anything for money. This leads to a fitting climax as the forces of hate and love converge while the couple attempt to break through the border!
Shiba, a wandering ronin, encounters a band of peasants who have kidnapped the daughter of their dictatorial magistrate, in hopes of coercing from him a reduction in taxes. Shiba takes up their fight, joined by two renegades from the magistrate's guard, Sakura and Kikyo. The three outlaws find themselves in a battle to the death.