Willy Vander Brook, a world with Franco-Belgian roots, travels to Paris for an interview. He is welcomed by his childhood friend Serge, an ex pub operator, and his roommate Frank, a fierce supporter of the Walloon independence. When Willy discovers that his candidacy is not accepted because he is Belgian, he and his compatriots decide to take revenge

In a schoolyard, kids play tag at recess. Back in class, Pol sits beside Justine. When the teacher's back is turned he twirls her hair. After school the boys scoff some candy and share it with the girls... The class is at the swimming pool. One boy diverts the teacher's attention so the others can sneak a peek into the girls' change room. But the surprise is on Pol when he finds himself trapped inside with the girls, his swimsuit still outside!