A group of soldiers is supposed to ensure the smooth nighttime passage of the military convoy through Prague, but things turn out differently. Eloquent young men convince the good-natured commander to sign a leave of absence, and the main character is left alone in the middle of a housing estate...

It is 5 May 1945 and the uprising against the hated German occupiers has broken out in Prague. The Czech guards open the gate of the Pankrác prison to allow the prisoners to escape en masse. Many of them are shot dead by the German guards but young Ruda (Jaromír Hanzlík) manages to run away. He is taken care of by one of the Prague fighters, concierge Kytka. Kytka hides him in the flat of the house's owner where only the young maid Karla (Jana Brejchová) is left, ordering her to take care of Ruda.