Two years have gone by. Vincent and Flo Leroy, now divorced, are next-door neighbors in Bordeaux, where they raise their four children while trying to start their lives over again. Vincent lives with Béné, a real do-gooder. Flo has started dating Edward, a rather annoying self-made man. Obviously, each ex-spouse cordially hates the other’s new partner. But things would be manageable if the children hadn’t decided to wage a war of attrition to eliminate their soon-to-be step-parents. Forced to prove to the kids that there’s no hope of their falling back in love, Vincent and Flo come up with the kind of crazy scheme in which they excel: by pretending to give each other a second chance, they intend show their children that family life can be pure hell.