Since his beloved violin was broken, Nasser-Ali Khan, one of the most renowned musicians of his day, has lost all taste for life. Finding no instrument worthy of replacing it, he decides to confine himself to bed to await death.

Jean-Pierre Savelli is a forty-something employee of an insurance company in Clermont-Ferrand who finds himself facing a mid-life crisis. When his fiancée Valérie decides to put their relationship on hold, he changes his holiday plans and heads for the Flots Bleus camping site near Arcachon. Jean-Pierre had been hoping for peace and calm. Instead he meets Patrick Chirac and his entourage of inveterate holidaymakers...

Over this long hot summer, Claude and Isabelle get their marriage back on track, while Bibou and Simon, spend a memorable summer discovering the world of grown-ups.