Li Xiuqin, an elderly woman living in the countryside, accompanies her granddaughter, Zhang Yaoyao, and her dog, Laifu. On Lidong Day (the beginning of winter), Li Xiuqin's son and daughter-in-law announced they wanted to take Zhang Yaoyao back to the city. Zhang Yaoyao refused and ran away in a rage, but was kidnapped by human traffickers. Li Xiuqin, Zhang Fuze, and Lin Manyu searched for her without success, but the clever and resourceful Laifu obtained information about Yaoyao.
