Without telling Paul, Sali, Lazare and Mamita sneak into ASE one night to steal the identity of Benjamin's biological parents. The latter, expelled from college for three days, goes to the countryside with Manu to put his ideas back in place... and discover that the story of Prune and Manu is not the clearest. Noé is preparing for his piano audition and is looking for a way to please Emma, who does not yet suspect his feelings. Paul finds out about the ASE expedition and can't believe it... And what can they do now that they know the identity of Benjamin's biological mother? To meet her ? Ignore it? Talk to Benjamin?

Benjamin wants his whole little family to accompany him to Normandy to meet his biological mother, Eve. It was during this trip of a few days to Cabourg that Benjamin tried to understand why his brother Noé had a grudge against him. The abortive expulsion of Lazare sheds light on Paul's past and his link with this father who did not see him born. Prune wonders what to do with her affair with Manu, while Mamita and Ousmane seem increasingly irreconcilable. Paul and Sali, subjected to many hardships as a couple, parents and children, must find the foundations of their family to lead it to meet Eve...