 Goplana – the nymph queen of Gopło Lake - is in love with Balladyna's beloved, Grabiec, and because of her jealousy she intervenes in peoples' lives and changes their destiny.The sisters’ hut is visited by the rich Kirkor, who was led there by Skierka, Goplana's servant.Goplana wanted Kirkor to fall in love with Balladyna so that Grabiec could be hers alone, but Skierka made a mistake and Kirkor fell in love with both sisters.