O Jecmínkovi plot
A great accident happens at the wedding of the beautiful virgin Marina and knight Jan. Out of jealousy, the spiteful and evil Snowdrop Fairy casts a spell on the groom. Jan is from now on a man without a heart. He actually throws his wife out of the house when she is heavily pregnant. That same night, Marina has their son. She calls him Grain of Gold. The good fairies give shelter to both and give the boy a magic cloak, which makes him invisible. But the evil fairy curses the child. It will never get to know its father. But as a young man, Gold Grain goes in search of his father...