That year, Li Mengxin was 18 years old and came to study abroad alone. In the first class at the university, she fell hopelessly in love with her single male teacher Zhuo Zhuo. In order to show her true feelings, Mengxin "scrupulously" used any means, and a series of ridiculous things happened. During her four-year college career, Mengxin witnessed Zhuo Zhuo's journey from being single, dating, getting married, and finally giving birth to a child. It seemed so perfect, but she was still alone in the end. In order to forget about Zhuo Zhuo, Mengxin also tried to have a boyfriend, but they ended up breaking up. Zhuo Zhuo's wife was a shrew, and he couldn't bear the fact that Zhuo Zhuo had someone else in his heart, let alone a female student, so he tortured Zhuo Zhuo and even Mengxin again and again, finally bringing his marriage to the edge of collapse...