In a small town in western China in the early 1990s, after finishing primary school, Xiaolei looks forward to his long-awaited summer vacation, free of homework. However, this hot summer is not the usual leisurely summer he imagines, as it coincides with the transformation of state-owned companies and the loss of job security. While Xiaolei and his friends idle away the days, the shock of the reformation of state-owned enterprises sees his parents, seemingly calm in the blazing sunshine, seething with inner anxiety. As time passes, Xiaolei has a feeling that a revolution has quietly taken place. His father has to become a migrant worker to make a living, with the mother and son relying on each other. Xiaolei feels that life has changed completely.