A suburban high school, structures, students and teaching staff are the exemplary mirror of a social and economic depression that seems irreversible. To worsen the situation, a few meters from the school, between the houses of the neighborhood, the "Zoo", a center of assistance to migrants became over the years a permanent refugee camp. A professor is called to hold a remedial course for six students suspended for disciplinary reasons. But when the clashes between the population and migrants break out, the situation quickly gets out of hand.