Joseph Galloudec seven years, lives in the eighteenth floor of a building in the Paris suburbs, between his mother Julia and her father Jean-Claude, a computer engineer and communist militant. His parents experiencing marital problems and his mother soon to give birth, he left for the summer holidays with his grandparents and three uncles, turbulent triplets. He discovers the castles of the Loire, Brittany and England. Upon his return, he met his sister Elisa, but her parents and tear her mother eventually left the home.