Young Marion fulfills a dream: she opens a bookstore in Chamonix, the holiday resort of her childhood. Surrounded by the magnificent mountain scenery of the French Alps, the sky feels within reach. Her happiness seems perfect when she meets the mountain guide Pierre. Marion believes she has found the right one in him, and the two get married. However, the harmony does not last long. Pierre often disappears without a word and stays away for days. More and more, Marion retreats into solitude. The mountains become her place of comfort, while the marriage turns into an uncertain terrain... until one day a message arrives that drives Marion to make a decisive choice. Sensitively, gently, and with penetrating clarity, Jean-Philippe Mégnin tells the touching story of a deep love - for the mountains, for a man, and for oneself.