On the day of her graduation ceremony from the National University of Pharmaceutical Sciences, Jiang Chunfen, the top, discovers that her lover, Gao Haiqiuxiao, the bottom, has mysteriously disappeared. Five years later, after completing her master's degree, Jiang Chunfen takes a job at an obscure pharmaceutical company, where she is put in charge of filing for approval of a new drug. At the city drug administration, she runs into Gao Haiqiuxiao, who has returned from a renowned Japanese multinational pharmaceutical company and is now competing with her for the filing rights. Meanwhile, she is also constantly harassed by a senior student who had a crush on her back in college. Now at the age when her parents are urging her to get married, Jiang Chunfen decides to have one more showdown with her former lover, for the sake of both her love life and her career.
