At Grandma's birthday banquet, Xu Xueying learns that her purchased downtown apartment has been promised by the elder to her cousin as a wedding house. She produces the property ownership certificate, insisting on clarifying the ownership of the house. As the dispute escalates, family loans, abnormal loan applications, and property material issues gradually surface. Mother Shi Chunxiang no longer yields blindly, and the mother and daughter preserve vouchers, protect their rights through formal channels, and ultimately draw a clear boundary between property and family affection, regaining the initiative in their lives.