A Czechoslovak battalion, led by Captain Hloušek, conquers a Slovak mountain village two days before Christmas Eve 1944. Christmas and classical music is heard from nearby German positions. The soldiers get permission from their commanders to celebrate Christmas. The only one against is the austere second lieutenant Jílek, about whose past there are various rumours and whom the soldiers distrust. Captain Hloušek decides to reconnoitre the enemy positions, which, despite a minor incident, goes off without a hitch. The holiday of peace and tranquility can begin both with ours and the enemy...