Shows the downfall of a wealthy merchant family in Vranye (a small town in southern Serbia) and the ascent of rich peasants to the status of merchants, who in their turn represent a new social force. Certain of justification of her sacrifice, which should prevent financial family decay, Sofka agrees to be sold to rich merchant in order to become a wife for his twelve years old son. Growing up in another time, Sofka's husband can not understand and justify her conduct. In 1948, three out of four Yugoslav feature films which were shot that year were produced in Belgrade - Immortal Youth, dealing with a war theme, directed by Vojislav Nanovic, Life is Ours, with a modern theme, directed by Gustav Gavrin and Sofka, directed by Rados Novakovic, which was the first film adaptation of a classic literary work among the Serbs (from the novel Tainted Blood by Borisav Stankovic).