Robert Langlois is now married to Catherine, the former housemaid. And they would live happily ever after if the housing crisis did not force them to live together with Gabrielle and Fernand, Robert's parents. For, despite the good will on either side, tension soon arises. What else to expect when there is too little space in their Montmartre apartment for four people (then for six then eight, the couple having... two pairs of twins!) ; the continued presence there of Fernand (who loves peace and quiet) after he is driven to retirement ; the difficult beginnings of Robert as a lawyer in a room of the apartment, etc... Other troubles follow and the harried family is on the verge of implosion...
as Robert Langlois, avocat
as Gabrielle Langlois, la mère
as Fernand Langlois, le père, professeur
as Catherine Langlois, l'épouse de Robert
as M. Calomel, voisin à l'étage au-dessus
as Marguerite, la fleuriste
as La visiteuse snob
as Une collègue de Fernand
as La directrice de Saint-Beuve, collège pour filles
as L'explorateur
as L'entrepreneur
as L'huissier de justice
as Léon « Alibi », ami de Robert
as Michel Langlois
as François Langlois
as Maître Petitot, avocat
as L'infirmière distraite (uncredited)
as Le déménageur (uncredited)
as L'employé du gaz (uncredited)
as Un futur père (uncredited)
as Angelo, l'ouvrier italien (uncredited)
as (uncredited)
as Un homme qui amène le panneau de vente (uncredited)
as Le commissaire de la compétition de cycles (uncredited)
as La fille qui ouvre la porte (uncredited)
as (uncredited)
as Le curé (uncredited)
as Un passant (uncredited)
as Un coureur cycliste (uncredited)
as Un homme de l'hôtel (uncredited)
as La fille de la visiteuse snob (uncredited)
as Un passant (uncredited)
as Le concierge de Saint-Beuve, collège pour filles (uncredited)
as Le client sourd (uncredited)
as Mme Calomel (uncredited)
as La concierge (uncredited)
as La cliente de la voyante (uncredited)
as Le garagiste (uncredited)
as L'employé S.N.C.F. (uncredited)
as Un invité parlant automobile (uncredited)
as Me Vandalle, de Cambrai (uncredited)
as La patronne de la fleuriste (uncredited)
as Une commère (uncredited)
as Un agent (uncredited)
as (uncredited)
as (uncredited)
