Ayant surpris la fin d'une conversation entre ses parents, Nicolas comprend que sa mère attend un bébé et que, par conséquent, le couple projette de le perdre en forêt, comme le Petit Poucet. Aux abois, l'écolier ameute les copains de sa classe, le glouton Alceste, le cancre Clotaire, le dur Eudes et le fils de riche Geoffroy, afin qu'ils l'aident à parer à cette menace. Échouant dans un premier temps à se rendre indispensable aux yeux de sa maman, en lui offrant des fleurs ou en faisant le ménage de la maison avec ses amis, le gamin échafaude un plan plus audacieux: faire enlever le bébé à naître par un gangster. Mais pour ce faire, il lui faut amasser des tas d'argent... The film is narrated from the perspective of young Nicolas who is content with his life, is loved by his family and has fun with his school friends. One day, his classmate Joachim discovers his mother is pregnant and he is soon to have a little brother. Joachim laments about the extra responsibilities and the possible neglect as the baby will receive all the attention. That night, Nicolas overhears his parents talking and suspects his Mum is having a baby, and they will abandon him in the woods like Tom Thumb. Nicolas enlists the help of his friends to get rid of the baby by hiring a gangster to kidnap it, resulting in hilarious misadventures and laughs along the way.

In French with optional English subtitles; closed-captioned in French. Dolby digital 5.1 or 2.0. Production originale française réalisé sur film en 2008.

Special features in French only: making of featurette, theatricaltrailers, trailer gallery.