![Adult Only Institute](https://image.tmdb.org/t/p/w185/kASFn7TC1TRVswbr7p8hQOOybho.jpg)
Back to school for Ducobu, Léonie Gratin and Latouche. But this year, a major rival for Ducobu arrives at school: TGV, the king of cheating 3.0. While the financial situation of Saint-Potache becomes disastrous, the two dunces will have to unite their creativity to win a song contest and save their school.