If you don’t like someone, you’ve got to pee in his sneakers!

Martin a boy with adjustment difficulties, moves with his mother to a new place. Martin has a habit of always getting into all kinds of trouble, and on the last day of school, everything goes wrong. Martin likes the school principal's daughter Marta, but the girl is also liked by the most popular boy in the school, Kevin, who has a fancy scooter. In his last trouble, Nitram, a charming wizard cat, comes to Martin's aid, who brings new adventures.