Child psychologist Hannah puts her daughter Fleur on the field. Exciting, because it is the first day in a new school. And Hannah will have known that right away. While Fleur adapts easily and makes friends, Hannah is confronted with house rules for which she does not know the existence, a singing and not so flexible teacher, curious and meddlesome parents, and the demand for parental participation. At the bottom of the ladder? The lice mother, who has to deliver the children from the troublesome creatures.