谭又麟与梁毓芳同时毕业于某大学。毕业那天，谭偕梁漫步时适大雨倾盆，谭即导梁至其小楼躲雨，谭系专攻建筑工程，曾设计一美妙之住宅标本，梦想将来与爱侣同居，言词间对梁露出无限爱意，梁亦允之，不知不觉中倾谈一夜，天明方返。
毓芳之母以家庭经济关系，将以毓芳许配与表兄陈伯华，毓芳心颇不愿，然以老母之命，口头敷衍了事。
一日，又麟往访毓芳，目睹毓芳伯华相谈甚欢，不禁妒火中烧，激愤之余，欲将心爱之住宅模型出卖，不料买手即情敌陈伯华，怅然返家，途中被汽车碾伤致死。
又麟死后，毓芳即与伯华结婚，婚后感情淡落。毓芳每于雨天，独自徘徊于又麟所居之小楼，抚今思昔，不胜感慨系之。
于偶然机会中，毓芳遇见一外貌酷似又麟之男子，名王澧生者，此人为猎艳能手，毓芳于追念又麟之情绪下，堕其彀中，某夜，二人幽会于小楼中。
翌日，毓芳返家，伯华大发雷霆，决定与她离婚，当她回到王澧生那里，又受一场残酷讥骂，于悲哀悔恨下，她回到小楼，以最通俗的手段，结束了自己的生命。

In pre-communism China, a widowed man falls in love with a young colleague who's the same age as his own children.

A man who becomes wealthy starts to have an affair and though his wife knows of it, she says nothing. Soon, the affair starts to have consequences and his business falls apart while the man’s sister starts to have a relationship with the brother of his wife.