A film about the preparation of the "Trilogy For a Single Man," about the medical and nutritional monitoring of French mountaineer Christophe Profit during his climbing "trilogy" and the period of intensive training that preceded one of the most fabulous "chains" ever made by a mountaineer. On March 12 and 13, 1987, Christophe Profit, then 26, successfully climbed the three largest north faces of the Alps in winter in 40 hours: Grandes Jorasses, Eiger, Matterhorn. But beyond this coverage of the event, it is the behind-the-scenes that is revealed, the story of this project, the ups and downs of its preparations and the personality of its author, a dancer of the verticals, who concentrates at his fingertips the energy and reflexes of life itself.