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.

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.