The mysterious closing of a Beijing school sends hundreds of migrant children on a desperate struggle to reclaim their right to an education. The Yuanhai Migrants Childrens School, which serves children of migrant laborers in Beijing, is shut down by city officials for reasons never made clear. The students and teachers manage to continue class, first by sneaking into the shuttered campus, then moving inside a ruined factory, and even setting up class on the street. One after another, these makeshift classrooms fail. Over the course of the semester, attendance drops from 720 to 16. Due to the dedication of the school staff and parents, the students persist in taking lessons, whether inside a decrepit minibus or in their teachers tiny apartment.