Five people are recruited by the Viking Society to collaborate on the first manned mission to Mars. They were chosen because of the psychological similarities they share with the five astronauts who will travel to the red planet. These volunteers therefore form a B-team of alter egos who will experience the adventure in parallel, behind closed doors on Earth.

In a countryside house where they are meant to explore the troubles in their sexuality, three women spend days and nights apprehending their inner demons. A serene German therapist and a kind-hearted social worker supervise them, help them and try to maintain the fragile balance of the group. During 26 days, in the midst of summer, Geisha, Léonie and Eugénie will have to refrain from breaking down, tame the whispers from present times and consider the future.