In the midst of the tumultuous Second World War, a gripping tale unfolds. Eugène, a brave French soldier, becomes ensnared deep underground after a cunning ambush orchestrated by German troops within a formidable fort. Now plunged into an abyss of uncertainty, he must summon every ounce of strength and resilience to fight for his very existence. Little does he know that his path intertwines with that of another survivor, their fates entwined in this treacherous subterranean world. Together, they must muster the courage and determination to claw their way out from the clutches of a certain demise, oblivious to the harrowing battle that awaits them beyond the confines of their underground prison.