Bakary Diallo enlists in the French army to join his 17-year-old son Thierno, who was forcibly recruited. Sent to the front, father and son will have to face the war together. Galvanized by the zeal of his officer who wants to lead him into the heart of the battle, Thierno will break free, while Bakary will do everything to rescue him from combat and bring him back safely. Revealing a previously unseen dramatic side of the great actor Omar Sy (The Intouchables), Father and soldier pays tribute to the African soldiers of World War I.