A French UN delegate has disappeared into thin air, sending reporter Moreau (Jean-Pierre Melville) and hard drinking photographer Delmas (Pierre Grasset) on an assignment to find him. Their only lead is a picture of three women.
At the end of the nineteenth century, little Marcel lives with his parents in the Provence countryside. During his holiday, Marcel meets Lili, a local boy who knows all the secrets of the hills, and the two become fast friends.
Every holiday Marcel and his family go to their cottage near Marseilles. During one of these holidays he meets Isabelle, a pretty but conceited girl... Adapted from the cult classic novel from Marcel Pagnol.