Iwane Sakazaki returns to his homeland and gets caught in the middle of an incident that results in the tragic death of two of his best friends from childhood. He decides to leave his domain, parting with his fiancée Nao, and becomes a vagrant masterless samurai with nothing more to lose. Iwane drifts to Edo, filleting eels during the day and working as a bodyguard at night for Imazuya, a reputable money exchanger. He gradually wins the trust of the people around him because of his mellow nature, the chivalrous way he treats everyone with courtesy, and his skills of swords. One day, he learns that Imazuya is being targeted in a conspiracy to sabotage a new monetary system implemented by the government, and Iwane decides to protect the people who have given him support.
Kotoji Akame (Naoto Takenaka) is a shabby, middle aged low-ranking samurai of small stature. One day, in a drinking contest, he misses sending his lord off as he leaves Edo for Kuju. Released from service for this blunder, Akame becomes a wandering samurai. He goes on to steal lances from many feudal lords' processions. For Furuta, suffering defeat is out of question. To protect his domain and family, he takes it on himself to meet Murase and proposes an alliance between the Wako, Fuki and Ushizu domains. With the fate of the feudal families in their hands, Furuta and Murase pursue Akame. Each with something to protect, the men fight desperately over the lances.
