Square dance leader Zhang Guilan only cares about her own exercise, turning up the volume late at night and early in the morning, and hogging the basketball court, disturbing residents caring for babies like Su Wan, exam-preparing student Zhao Xue, office worker Li Jie, and basketball-playing teenager Lin Xiaoyu, among others. Multiple communications, property management mediation, and police calls all yield no results, and the conflict between both sides continuously escalates. Retired Justice Bureau Director Zhou Zhengming steps forward, collects complete evidence of the noise disturbance, breaks through the concerns about Zhang Guilan's children's jobs, and resolves the standoff. Both sides jointly formulate a civilized dancing convention, delineating venues and regulating time slots and volume. Afterwards, Zhang Guilan takes the initiative to organize a silver-haired helper group, prepares a neighborhood Mid-Autumn Festival gala, the neighbors clear up their past grievances, and they explore a new model of a civilized community where the old and the young live in harmony.