Za tichých nocí: Jana's beautiful niece arrives in Prague to live with two spinster aunts. Both women wish to marry her off. The son of the court councilor Petr is courting her. However, Jana has met a young official Záviš and the two fall in love. But Záviš is poor and cannot marry yet. They keep it a secret from Jana that he composes songs. Coincidentally, Petr is his friend and both men talk about the girls they love, unaware that in both cases it is Jana...