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.

Four people are affected by one man’s disappearance: Lucette, his wife, who anxiously awaits his return; Louis, a young father whose relationship with his wife is going through confusing times; Chantal, a hotel receptionist who dreams of sharing her life with someone else; Marcel, an ex-gambler confronted by the realities of aging.

Making the most of the family home while her parents are away, 22-year-old Nicole is enjoying a peaceful summer with her best friend Véronique. But when Nicole’s older brother shows up with his band to record an album, the girls’ friendship is put to the test.