As the dreams of Didier Mathure, a brilliant space engineer, literally go up in smoke when his rocket explodes on take-off, he is transferred to head GEPAN, a unit specializing in UFOs. He is tasked with coming up with scientific explanations for the UFO sightings that are currently dominating the headlines. This is a nightmare job for a die-hard rationalist like him, and he is determined to find a way out as soon as he can.

Region of Occitania, France, 1792. As the storm of revolution devastates the country, young monk Gabriel and his companions live peacefully in the Franciscan monastery of Saorge, near the Italian border. But everything changes with the arrival of the beautiful Marianne and a military detachment.

In 1967, during the making of “La Chinoise,” film director Jean-Luc Godard falls in love with 19-year-old actress Anne Wiazemsky and marries her.

Paul is preparing to leave Tajikistan, while thinking back on his adolescent years. His childhood, his mother's madness, the parties, the trip to the USSR where he lost his virginity, the friend who betrayed him and the love of his life.