Across two countries, France and Algeria, and five cities, Mohamed Gholam takes us south to tell us about the earthen and vernacular-inspired architecture of André Ravéreau. Passing through Lyon, Marseille, Algiers, and Djelfa, this adventure will take us to Ghardaïa, in the Algerian desert. The documentary presents the following buildings: L'Orangerie in Lyon, the Village Terre de l'Isle-d'Abeau in Villefontaine, the Unité d'Habitat or Cité Radieuse in Marseille, L'Aérohabitat in Algiers, the Palais des Raïs or Bastion 23 in Algiers, the Hôtel des Postes in Ghardaïa, and the low-cost housing of Sidi Abbaz de Bounoura.