A gaggle of French troopers, together with the patrician Captain de Boeldieu and the working-class Lieutenant Maréchal, grapple with their very own class variations after being captured and held in a World Warfare I German jail camp. When the boys are transferred to a high-security fortress, they have to concoct a plan to flee beneath the watchful eye of aristocratic German officer von Rauffenstein, who has shaped an surprising bond with de Boeldieu.
