From this day on, everything changes for Joop: at home, at school, with his friends. German troops have invaded the Netherlands. A Jewish classmate is suddenly no longer allowed to be in his class. All Jewish families from a neighboring street are being deported. Joop's parents are hiding people who are in the resistance in their house. But there are also the others, the bystanders, who betray their own countrymen to the Germans. Is Joop's best friend Kees involved with them?.