新撰組根據被捕的古高俊太郎的供述，攻入了三條小橋西邊的客棧「池田屋」。元治元年六月五日四刻，解開了幕末史上最黑暗、最寒冷的漫漫長夜。在新撰組隊員與志士們持續死鬥時，匆匆趕到的市村鐵之助，一眼就看到了正在與沖田總司對峙的宿敵吉田稔磨。對著吉田拔出雙刃的市村鐵之助，理解拔刀不是爲了殺人，而是用來保護心愛的人；他是否背負得起自己所下決斷的沉重負荷呢？

幕府后期，日本史上相当有人气的其中一个团体，一方面也是令勤王志士们闻风丧胆的年轻集团－新选组。以局长近藤勇为主轴，日本的未来就寄托在他们身上，是描述贯彻自己的信念的幕末青春物语。

Kanichiro Yoshimura is a Samurai and Family man who can no longer support his wife and children on the the low pay he receives from his small town clan, he is forced by the love for his family to leave for the city in search of higher pay to support them.