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...

The commander of the military training camp, newly promoted Major Cibulka, keeps his subordinates in line. Because of an unexpected emergency, he refuses to give leave even to the young lieutenant Zabran, whose wife is due to give birth any day. In addition, a false article appears in an army newspaper claiming that Zábrana is an example of a bad company commander. In fact, it is he who has the best leadership skills. Fearing for his wife's health, Zábrana disobeys orders and departs for Prague at night to visit his wife in the maternity ward. Cibulka decides to push the envelope even harder, and drives Zábrana, whom he has long disliked, before the prosecutor.