Romane and Philippe separate. After 10 years together, two children and a dog, they do not love each other anymore. They give birth to a "separation": two separate apartments, communicating only through the room of their children.

A filmmaker takes on adapting a book about mother-daughter relationships, stirring up memories of her own childhood trauma and the mother who left her as an infant.

From the Atlantic to the Black Sea, Mathias and Philippe, two old friends, embark on a bicycle journey that Mathias’s son made before his tragic death. The two men ride through the ordeals with tenderness, humor and emotion.