1917. Bakary Diallo enlists in the French army to join his 17-year-old son, Thierno, who has been forcibly recruited. Sent to the front, they will have to face the war together. While Thierno learns to become a man, Bakary will do everything to bring him back safely.

Marianne Winckler relocates to the port city of Caen in order to pass herself off as a member of a large community of itinerant workers desperate to make ends meet. She gains employment as a cleaner on a ferry travelling between Ouistreham and Portsmouth, recording the drudgery of the work she and her colleagues are required to do.