It tells the story of a left-behind child named Xiao Yunjie (nicknamed Shorty), who lives with her grandmother and two half sisters in a mountain village. In a village without young people, the 12-year-old Xiao Yunjie not only has to study hard, but also has to bear heavy housework. Hardship and happiness are intertwined in this summer. Winter is coming, and Xiao Yunjie witnessed her friends who are about to go to school run away from home one after another and go south to work. The sudden death of her grandmother brought her relatively easy childhood life to an abrupt end. Xiao Yunjie could only leave her hometown with her two sisters to find her parents who were working in Guangzhou. Her parents who were wandering outside faced survival pressure and many more serious problems that she could not imagine...