This tells the the bittersweet love story between Zhou Linlin, a student bad at studying, and Fang Yuke, the "family friend's outstanding kid". They thought they would go their separate ways after the college entrance examination. Unexpectedly, the two were admitted to the most unpopular major of the best institution in the country, the Department of Animal Science. In order to make up for the "first love trauma" that she had inadvertently caused to Fang Yuke, Zhou Linlin did everything possible to help Fang Yuke chase back his "campus beau first love", yet unknowingly, she fell into a trap... Graduation season is approaching, the person deeply hidden in the memories of your youth, are they still by your side?...

Xia Tian, an up-and-coming furniture designer in her thirties, thinks she has become an city woman who is comfortable in love. However while being in a relationship with her boyfriend, Guan Xin, who is a gentleman, she happens to meet her ex-boyfriend Xu Zehao, a confident and arrogant design firm owner who has been in love with her for five years. In the face of the very different personalities of her ex and her current boyfriend, are they friends or lovers, is there misunderstanding or clarification, will it be a reunion or rejection, is it a breakup or marriage? A series of sharp emotional story, around Xia Tian's love life slowly unfolded....

At the tenth wedding anniversary celebration of the female protagonist Bai Li and her husband Ye Yunkai, she meets her college junior Su Yu, the male protagonist. At this time, Su Yu is Ning Mochen's boyfriend. Ning Mochen schemes to let the female protagonist find out that her husband is cheating with her. Later, the female protagonist and the mistress fall into the water and their souls are accidentally exchanged. The female protagonist wakes up with the mistress' soul and begins her revenge. The first wife of true love exchanges souls with the vicious mistress, putting on a façade to turn the tide....