在这部东京兄妹剧情片中,健一（绪形直人 饰）和洋子（粟田丽 饰）的父母在意外中早早的离开了他们，这么多年来，兄妹两人过着相依为命的生活。健一要养家，于是，他在一家旧书店找了一份工作，洋子高中毕业之后也决定步入社会，来到了照片馆成为了一名照片冲印工。
健一有一个名叫桂子的恋人，虽然桂子非常想和健一携手步入婚姻的殿堂，但是健一却决定在妹妹20之前绝不结婚。因为这绝大的分歧，桂子忍痛离开了健一。那边厢，洋子结识了健一的摄影师朋友真，两人的交往逐渐变得频繁，最终走到了一起。洋子不顾哥哥的反对，执意要从家里搬出去，和真同居。
Living in an old Tokyo district, Kenichi works at a second-hand bookshop to support his sister, Yoko, a high school student. When Yoko graduates, she starts work at a photo shop. By the time, Kenichi's girlfriend has decided to marry someone else as she is tired of waiting for him. When Yoko starts dating Kenichi's best friend, Makoto , he is strangely resentful, but when Makoto is involved in a fatal accident, brother and sister resume their routine life. Until one day...
