Based on a real event - the shooting of a group of working-class children on 20 April 1930 in Radotín. Thirteen-year-old Boženka‘s mother works as a laundress, and Boženka and her two younger siblings are not living on a bed of roses.
The story of two communist friends, one of whom leaves as secretary to the district committee of the Communist Party of Czechoslovakia and the other remains in the village as a party agitator.