Neighbor Zhang Hong publicly slanders Shen Tang in the community group, falsely claiming Shen Tang’s "son," Chen Mumu, severely beat and fractured her 18-year-old daughter’s bones. Demanding $67,000 in damages, Hong sues Shen Tang while sparking online harassment. Weak and selfish, Shen Tang’s husband, Chen Yan, demands she apologize and pay up. Instead, Shen Tang silently gathers evidence.On court day, surrounded by hostile neighbors, Shen Tang unstraps her baby carrier to present "defendant" Chen Mumu—a 3-month-old infant in swaddling clothes. The courtroom erupts in shock. Summoning key witnesses and surveillance, Shen Tang proves the daughter fell while secretly kissing a boy and blamed a fake name out of fear, which Hong greedily exploited. The court dismisses the suit, referring Hong for criminal investigation. Post-trial, Shen Tang discovers Chen Yan had secretly signed divorce papers beforehand to saddle her with all debt and the sick infant while keeping their apartment. Disgusted, Shen Tang leaves with her baby.Tragedy strikes when Mumu suffers severe airway choking. In despair, Shen Tang calls Gu Yanchuan, a top pediatrician and former classmate. Yanchuan rushes over, saving the infant's life. However, while Shen Tang rests, Chen Yan and his toxic mother superstition-feed the 3-month-old greasy bone broth, causing acute gastroenteritis and high-fever seizures.Slapping her pathetic husband, Shen Tang cuts ties forever and finalizes the divorce. Eight months later, rebuilt and independent, Shen Tang watches Mumu take his first steps under Yanchuan’s gentle protection, embarking on a bright new life.