Bernard Guyot, vicar in Notre Dame de Bellecombe, compares fly-on-the wall scenes with reconstructed scenes by associating images dating from the 1960s to the 70s, in order to put forward evolutions, but also continuities of the practices in Savoy. First called "Blue mountain, white mountain", this movie recounts the transformation of the mountain rural world opening to the new needs of tourism and winter sports. With an amused tone, the director makes us live with the rythm of seasons and times and shows us how mountain landscape, while being modernized, kept ancestral habits which are still useful today. Around his images of Crest-Voland and Notre Dame de Bellecombe, he knows how to combine nature and human activities to put forward all the assets of the territory of Val d'Arly.