Jiang Muzhi, a fish seller at a local market, and Fu Chengzhou have been in love for years and have a daughter, Fu Nianchu, after marrying. When Shen Shiyu orchestrates a car accident that leaves Fu Chengzhou with amnesia, he mistakenly believes Jiang Muzhi is a fish-selling woman who schemed to marry him and insists on divorcing her. Jiang Muzhi leaves with their daughter but secretly makes plans, joining forces with Fu Chengzhou, who is also pretending to have lost his memory and enduring humiliation, as they fight Shen Shiyu and Qin Anruo's schemes from the shadows and in the open. To protect his wife and daughter, Fu Chengzhou pretends to get engaged to Shen Shiyu.