In 1844, the peace of Feudal Japan is threatened by cruel Lord Naritsugu Matsudaira, who is politically rising and getting closer to his half-brother, the shogun. After the harakiri of the Namiya clan leader, samurai Shinzaemon Shimada is summoned by the shogun's advisor Sir Doi of the Akashi Clan to listen to the tragedy of Makino Uneme, whose son and daughter-in-law have been murdered by Naritsugu. Then Sir Doi shows a woman with arms, legs and tongue severed by Naritsugu and she writes with...

While hunting in the forest, Lord Asano of Ako and his samurai find a young half-breed and take him with them to live in the castle. Several years later, Lord Asano holds a tournament to welcome the Shogun to Ako. The night after the tournament, Lord Asano is bewitched into hurting Lord Kira of Nagato, and is punished into committing seppuku by the Shogun. Realizing that it was a Lord Kira's evil plot, the samurais and the half-breed sets out for revenge against the Shogun's order.