Franck and Karine are offered a job on a cruise ship they can’t refuse. The only problem: their daughter Camille has to study for her finals but has other ideas of fun in mind instead… No problem! To straighten his daughter out and set her to work, Franck calls on his father André, a retired captain from the national police, hopelessly uptight and rigid. With military discipline, Camille’s finals will be a success! But this is the moment when the second grandfather Teddy, an eccentric and wild former nightclub manager and the total opposite of the strict André, chooses to return after many years abroad... Living together promises to be complicated…

Two villages in the south of France have always been bitter rivals, but when a group of asylum seekers arrive in the community, the life of both villages is shaken up and age-old disagreements escalate. Their antagonism reaches its peak with the annual rugby derby played between the two village teams, but this time, with the new outsiders joining as unexpected recruits, the result of the 100th match will be more unpredictable than ever.