The rich peasant Zhrnaj is so possessive that he won't even get married because he doesn't want to support his wife, and he won't even allow it to his valet. He uses his wits and devises a trick - when the peasant goes to town, he sees a girl on the road who sings that she doesn't eat or drink, she only lives on air. That would be a woman. Hardworking and wouldn't cost him anything. And so the peasant marries but he doesn't know that she is sister of his valet and she lives like everyone else. Only when it seems to him that she beautifies herself out of thin air he start to suspect her. But when he hides to watch her, everywhere he pays for it. He almost loses his life but at the end he find love to her.