Eight-year-old Zheng Xiaohe is well-behaved and sensible, used to understanding her family. After school one day, hungry and timid, she hoped her grandmother would take her home, but her grandmother was busy with square dancing and made her go back alone. An accident happened at home; Xiaohe fell and lost consciousness, and the family dog Heizi desperately banged on the door for help, leading a neighbor to discover the emergency. At this critical moment, the family suddenly came to their senses, and her father and grandmother were filled with guilt. After this ordeal, the family learned to listen to the inner voice of the child and no longer ignored her demands. In the days ahead, the family accompanied Xiaohe attentively, learned to respond to her desires, and rebuilt a warm and harmonious family through mutual understanding and adaptation.