Jiang Wan, a Grade-A tertiary hospital department director, owns pre-marital independent property and has long suffered moral kidnapping by her in-laws after marriage. When her brother-in-law Zhang Hao has a prolonged cough, Jiang Wan suggests cancer screening, but her mother-in-law resents the expense and forcibly arranges for him to move into Jiang Wan's marital home. Zhang Hao behaves wretchedly, and the Zhang family mother and son also demand 200,000 to buy him a house. After Jiang Wan refuses, her mama's boy husband Zhang Tao domestic-abuses her and accuses her of being infertile. Jiang Wan decisively proposes divorce and expels everyone. Due to delayed diagnosis and treatment, Zhang Hao is diagnosed with terminal lung cancer and passes away. Unrepentant, the mother-in-law and ex-husband come to cause trouble, spread rumors online, and commit extortion. Jiang Wan organizes evidence, live-streams to expose their wicked acts, and the two are finally handled by the police according to law, allowing Jiang Wan to shake off her unhappy marriage.