Jean-Étienne Fougerole is an intellectual bohemian who released his new novel "In Open Arms" and calling the wealthiest people to welcome home the families in need. While he promotes his book during a televised debate, his opponent criticized him for not applying what he himself advocates. While stuck, Jean-Étienne Fougerole accepts the challenge, for fear of being discredited. The same evening, a family of Roma rings the door of his Marnes-la-Coquette villa and the writer feels obliged to house them.

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