A climatologist, a physicist, and a volcanologist set out to conquer the highest peak in the Alps. Through exceptional images, the film recounts their odyssey and reveals the immense wealth of this natural laboratory. Straddling France, Italy, and Switzerland, the Mont Blanc massif was formed 240 million years ago. Four times the size of Paris, it covers 400 km2. Its summit, the highest in Western Europe, rises to 4,810 meters. Three scientists begin its ascent: Martine Rebetez, a Swiss climatologist; Étienne Klein, a philosopher and physicist at the French Atomic Energy Commission; and Jacques-Marie Bardintzeff, a geologist and volcanologist. Advancing in two roped teams, they are accompanied by Jean-Franck Charlet and François-Régis Thévenet, mountain guides, as well as physiologist Hugo Nespoulet.

Join us as we explore life on the highest mountain plateau on Earth. This beautiful and other worldly place is also one of the harshest on the planet. We follow the lives of some of the iconic creatures that call it home. From Tibetan wolves struggling to raise pups in the rugged peaks, and rare snub nosed monkeys facing family dramas on the forest slopes to chiru antelopes that travel hundreds of miles to give birth while facing death, and hardy pika who tough out the elements all year, whilst under constant attack. Discover how these extraordinary animals manage to not only survive, but also thrive on the roof of the world.