In the third year after moving into their riverside apartment, Shen Zhixia discovers that her husband, Zhou Muchen, spends two hours every night talking to the fish tank without fail. When her best friend Xu Shuyao visits, she takes one look at the aquarium, panics, and calls the police. Not long afterward, she mysteriously falls into the river and dies. Shen Zhixia secretly investigates and uncovers a hidden surveillance camera concealed in the base of the fish tank. She also discovers that Zhou Muchen has another wife, Bai Jing, who has been bedridden for eight years. Gathering evidence, she reports the crimes under her real name and exposes the entire truth during a family banquet. In the end, the villains are brought to justice, and Shen Zhixia leaves her painful past behind to start a new life.