江户时代后期,池田屋事件后,江波三郎身怀为新撰组原局长叔叔芹泽鸭复仇的愿望、以奸细身份加入了新撰组,目睹低层武士因触犯幕府规则而遭残暴对待,从最初的震惊愤慨,到后来逐渐麻木,并以身不由己为麻醉自己的借口,逐步参与到这场血腥行动中,最终身份败露,仍逃不过杀戮。镜头风格多变,此片为加藤泰代表作之一。A headstrong young man seeks to join the Shinsengumi, but as his determination impresses his superiors, questions begin to arise as to his true identity and intentions.