German soldiers trapped in the ruins of Stalingrad wrote home in the final weeks of the battle, and this film builds its account almost entirely from those letters. Voice actors read the words while archival footage and photographs of the frozen city, the collapsing Sixth Army, and the Soviet encirclement fill the screen. The letters move from confidence to confusion to despair as rations run out, the airlift fails, and Friedrich Paulus's army is cut off with no way home. Some men write about frostbite and hunger in plain, practical terms; others try to explain to wives and mothers what is happening to them, knowing the mail may never arrive. The film uses this correspondence, much of it seized before delivery and preserved in German archives, to give a soldier's-eye view of a defeat usually told through generals and maps. It stays close to individual voices rather than grand strategy, and the effect is a portrait of an army that already knows, before the surrender, that it has been abandoned.