Plot:

Enzhi (Ren Changding), a senior student who finished military service, is studying in the Law Department. The campus is full of young men and women curious about sex. It's a pity that he has no feminine charm and a bad brain. By chance, Yinzhi met Xiao Yin (Ha Ji Won), the top player in the school fitness club, and he was immediately attracted by each other's beauty and sexiness. Yinzhi tried her best to get close to Xiao Yin and get a good impression, but she ended in failure and even caused many misunderstandings. For example, on the bus, he was kicked by Xiao Yin as a pervert.

Later, Xiao Yin was fascinated by Xu Xiang (Zheng Min), a rich playboy, and even got pregnant, but she was finally abandoned, sad and desperate. At the same time, the relationship between Yinzhi and Yinxiao has undergone subtle changes.