Kamimori Mikijiro is a junior samurai, and is absconded by two people. After escaping his pursuers he wanders around the northern provinces for three years. He ends up in Edo's red-light district Yoshiwara. There are a variety of incidents in Yoshiwara which Shiro is trying to solve. Kamimori is hired as a bouncer at an establishment where NVL women teach reading, writing, and prostitute themselves. The two people from Kamimori's past re-emerge in Yoshiwara. 出生于丰后的下级武士神守干次郎（小出惠介 饰）和寻常人家野村汀女（贯地谷诗穗梨 饰）自幼青梅竹马，两小无猜，他们对彼此都抱有深深的好感，然而造物弄人，汀女的父亲因为欠债将女儿卖给粗暴肤浅的武士藤村惣五郎（皆川猿时 饰）。和爱人生离死别已经令人肝肠寸断，丈夫的暴力拳脚更令汀女生不如死。直到某天，干次郎带着爱人逃离家乡，他们的命运才发生转机。一路上藤村和雇来的武士穷追不舍，而掌握了萨摩示现流刀法的干次郎将他们接连击退。命运使然，他们落脚吉原游廓。干次郎以用心棒的身份受雇于当地的头面人物，交织着血与爱的故事就此展开…… 本片根据佐伯泰英的小说改编。
