When Ducoboo, a mischievous schoolboy, constantly cheats on his tests, his schoolmaster and classmates try to catch him in the act. A funny and lighthearted story unfolds in an elementary school setting.

Ducobu takes a gap year on a environmental project, but he really just wants to skip school!

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.

Ducobu is elected president of the school, much to Léonie and Latouche's despair!

Ducoboo, a troublemaker, embarks on a wild and hilarious journey filled with pranks and mishaps, making his summer vacation one to remember. Set in Provence, near the Mediterranean Sea.