蒋南孙（刘诗诗饰演）是一个出生在富贵人家的女儿，从小衣食无忧，家庭富足，在外人的眼中，他是一个有修养的孩子，是众人眼中的乖乖女，可是只有她和朱锁锁（倪妮饰演）知道，蒋南孙并非外表那样，骨子里是存折叛逆，朱锁锁从小生长在一个贫穷且不完整的家庭里，或许正是如此，她才更加迫切希望自己能收获一份完美的爱情，能拥有一个温暖的家。蒋南孙和朱锁锁从很小的时候就是好朋友，现在更是成为了无话不说的好闺蜜，可以为了对方两肋插刀。

蒋南孙一夜之间家庭破产流落街头，从一个天之娇女变成了一个无处安身的流浪女，幸亏还有一个好朋友朱锁锁，朱锁锁将蒋南孙带回来一起住，帮助蒋南孙完成学习，成为了一个职场白领，朱锁锁也得到了自己的爱人成亲，可没想到爱情和婚姻都是不幸的，蒋南孙挺身而出守护自己的好友。

Jiang Nansun (played by Liu Shishi) is a daughter born in a wealthy family. In her eyes, he is a well-cultivated child and a good girl in the eyes of everyone, but only she and Zhu Suosuo (played by Ni Ni) know that Jiang Nansun is not what he looks like, but a rebellious passbook in his bones. Zhu Suosuo grew up in a poor and incomplete family. In the family, maybe it is just like this that she is more eager to reap a perfect love and have a warm home. Jiang Nansun and Zhu Suosuo have been good friends since they were very young, and now they have become good girlfriends who can talk about everything, and can do anything for each other.

Jiang Nansun's family went bankrupt and lived on the street overnight, from a girl of heaven to She became a homeless girl with no place to live. Fortunately, she still had a good friend Zhu Suosuo. Zhu Suosuo brought Jiang Nansun back to live with her, helped Jiang Nansun finish her studies, and became a white-collar worker. Zhu Suosuo also got her lover and got married, but she never expected love Both marriage and marriage are unfortunate, Jiang Nansun stepped forward to protect his friend.