The story begins with a tournament where knights fight for the favor of Vanda, Barbora and Maruška, daughters of King Pravoslav. While the suitors Vanda and Barborka have successfully conquered their rivals, Maruška runs away to the garden, where she meets her admirer. The handsome and mysterious prince is actually the son of the King of the Underworld. King Pravoslav wants to entrust his crown to the daughter who will express her love for him as warmly as possible. While Vanda and Barbora talk about gold and jewelry, Maruška declares that she likes her father like salt, which, according to her, is more valuable than gold. The insulted king despises salt, kicks Maruška out of the castle and rudely humiliates the Salt Prince. At that moment, the king of the underworld appears and curses Pravoslav's kingdom. All the salt turns to gold, but the initial joy doesn't last long. Now Maruška's task is not only to save her father's kingdom, but also to save the Salt Prince, who has been turned into a statue...