Jiang Shutong is forced to break up with her boyfriend of many years. What awaits her is not an apology, but her mother's words: You are the older sister, yield to your younger sister. Before she can recover, her mother has already accepted a twenty-thousand deposit, planning to marry her off to a greasy man in exchange for a fifty-thousand bride price. At the matchmaking venue, she is harassed by the greasy man, and Pei Yichen steps in to rescue her. The man utters the line, I felt an instant affinity with you, and the two register their marriage that very day. She thinks she has married an ordinary wage earner living in cramped shared housing and splitting expenses AA style, but he conceals his identity as the heir to the Boyu Group, signing a one-year trial marriage agreement.