Jeanne, a shy young woman, works in an amusement park. Fascinated with carousels, she still lives at home with her mother. That's when Jeanne meets Jumbo, the park's new flagship attraction.

Jeanne (Portrait of a Lady on Fire's Noemie Merlant), a shy young woman, works as a night watchwoman in an amusement park and lives at home with her elderly mother. Her mother is desperate for her to meet a man, but Jeanne prefers to spend her time with the park's newest attraction - Jumbo, the tilt-a-whirl ride.