Jiang Chunfen (Gong), an undergraduate graduate of the National Pharmaceutical University, discovered that his lover Gao Haiqiu Saki (Shou) was mysteriously missing on the day of the graduation ceremony. Five years later, Jiang Chunfen, who had graduated with a master's degree, worked for an unknown pharmaceutical company and was responsible for a new drug application. At the Municipal Food and Drug Administration, he met Gao Haiqiu Saki, who had returned from a well-known Japanese multinational pharmaceutical company, and competed with him for the right to apply. At the same time, I was constantly being harassed by my senior who had a crush on me when I was an undergraduate. Jiang Chunfen, who was already being urged to get married by his parents, decided to have another fight with his former lover for the sake of his relationship and work.