Brittany, France, 1980s. A group of friends, fed up with the boring country life and eager for excitement, create a radio station.

Antoinette, a school teacher, is looking forward to her long planned summer holidays with her secret lover Vladimir, the father of one of her pupils. When learning that Vladimir cannot come because his wife organized a surprise trekking holiday in the Cévennes National Park with their daughter and a donkey to carry their load, Antoinette decides to follow their track, by herself, with Patrick, a protective donkey.

Céline, Thomas and Maxence always go by three. Just like the republican motto. They want to get married, to get a house, work, good children and eat oysters every day. Rebellious and ill adapted to the furious economical and administrative reality, they ride their burning quad bikes and travel across an afflicted France, looking for new landmarks, deserts strewn with bipeds and moments of ephemeral bliss.

Everybody has always loved Jeanne. These days, she hates herself. Up to her ears in debt, she has to go to Lisbon and sell her mother’s apartment, who passed away one year ago. At the airport, she runs into Jean, a whimsical and somewhat intrusive former high school classmate.

„Un peuple et son roi" crosses the destinies of the men and women of the population, and those of historical figures. Their meeting place is the newly founded National Assembly. At the heart of the story lie the fate of the king and the birth of the French Republic.