After eight years of marriage, Lin Wantang accidentally discovers that her husband, Zhou Yuchuan, has been renting out her grandmother's inherited ancestral house on a main street to Qiao Wan, the widow of his benefactor, and her family for just 80 yuan a month—for the past eight years. The family has even secretly renovated the old house and turned it into a restaurant. Finally seeing the truth, Lin Wantang sets out to reclaim her property, gather evidence, and file for divorce. Facing Qiao Wan's endless schemes and a developer's demolition plans, she joins forces with the neighbors of the old street to protect her family's ancestral home. After successfully securing its designation as a historic and cultural district, she starts a peaceful new life with her children.