Film about children. Watched in 2000. The protagonist is a chubby boy, he has a friend who is more successful than him, slimmer, more athletic, and girls like him. The protagonist's mother works in a hospital and had to leave them alone at home. They pack up and go to the station. There, another girl joins them. They all get on the train together and leave for another city. I think it was France. Upon arrival, they get into some kind of adventure. And they are looking for someone. They both seem to like the girl. Get to some woman. I don’t remember what happened next, but at the end of the film they all celebrate with their parents.