The Ysbreeker family -- mother Jolien, father Frank, daughter Roos and son Teun -- are enjoying their annual holiday on a camping site in France. Teun is at the beginning of his puberty and can't quite control his hormones. Roos, a teen girl in the middle of her puberty, is more interested in her first camping love than in her own family. Teun notices that his sister is becoming a woman, in all different ways. How does he react? Does it have any influence on the brother-sister relationship?