A talented musician from a wealthy family whose career is rising is in love with Sofia, a humble girl, against her parent's class prejudices, even when she is suffering from a venereal disease. He goes to war against Bolshevik Russia and is taken prisoner and nearly executed but the sentence is commuted for a mission in Poland. The film is a follow-up to The Unspeakable (O czym sie nie mówi), aimed at warning on venereal diseases. First film of Jan Kiepura. Believed lost.