Su Li, a design project manager, owned a school district apartment before marriage, single-handedly bore family expenses for years, and blindly endured her in-laws' preference for boys over girls. On her daughter Fantuan's fifth birthday, unfair treatment triggered an acute stress reaction, and Su Li completely awakened. She changed the locks, gathered evidence, and found out that her husband, Song Yanshen, had secretly transferred 780,000 to subsidize his younger uncle's family. Facing her in-laws' making a scene and relatives applying pressure one after another, Su Li relied on complete evidence to sue for divorce and recover the money. Finally, she broke away from the oppressive native in-laws' family and started a new, equal, and stable life with her daughter, while the Song family also fell apart due to profit entanglement.