Le petit Nicolas

Nicolas leads a peaceful existence. His parents love him, he's got a gang of great friends with whom he has a lot of fun, and he has no desire that anything should change... But one day, Nicolas overhears a conversation between his parents that leads him to believe that his mother is pregnant. He panics and imagines the worst: soon a little brother will be there who will take up so much space that his parents will no longer have time to take care of him. (unifrance.org)