Somewhere between Montmartre and Saint-Germain-des-Prés, Jean-Jacques Sempé and René Goscinny lean over a large white sheet of paper and bring to life a mischievous and endearing boy, Little Nicolas. From schoolyard games and fights to summer camp pranks and camaraderie, Nicolas lives a merry and enriching childhood – and brings friendship and newfound life to his creators, too.

Nicolas has a happy existence, parents who love him, a great group of friends with whom he has great fun, and all he wants is that nothing changes. However, one day, he overhears a conversation that leads him to believe that his life might change forever, his mother is pregnant! He panics and envisions the worst.

Santa doesn’t want to retire, but rules are rules and he must train someone to replace him. The lucky winner, to be chosen from among millions of children, must be named Nicholas, be an orphan and have a pure heart. On the other side of the planet, there is a little boy who is a perfect match, but his lack of self-confidence and fear of heights make him a poor contestant. Will Santa agree to step down, and help his apprentice take his place?