The beautiful Princess Jasněnka runs afoul of a powerful evil witch. Her father, the king, imprisons her in a tower. Jíra, a shoemaker, designs leather wings that allow him to fly, and comes across the tower where Jasněnka is trapped. The two fall in love, and Jíra returns to the tower to take Jasněnka away, to the horror of the castle staff who believe Jíra is Lucifer.