A fairy tale about love, envy, and intrigue, which are deservedly rewarded by the powerful ruler of the river. The magical ring of the powerful king of the river frees the fisherman's daughter from evil power, but she must never take it off. A wealthy merchant indulges the whims of his beloved wife, who is encouraged by her maid to seek more. She hopes that the merchant will soon lose patience, reject his wife, and that she will take her place. Together, they persuade him to obtain the ring at any cost. However, the river king's gift has more power than they realize...

The mysterious mechanism of a music box keeps playing different versions of the same melody. In isolation and an atmosphere of fear you might think that other melodies do not exist because it helps to bear the constant pain. False notes give hope for a better fate and freedom but no one knows what price they'll have to pay.

Sylvie marries an only child who is strongly emotionally attached to his mother. His mother, Alžběta, cannot imagine losing her son Hynek, a young doctor, or sharing him with his wife. Therefore, she first tries to prevent the marriage, and when she fails, she tries to break up her son's marriage. Sylvia, the daughter-in-law, experiences firsthand the struggle with her mother-in-law over her son and her husband. She naturally wonders whether a man who, at the age of 35, is unable to stand up to his mother deserves a wife or just pity...