Princess Helen and Prince Wenceslas were betrothed by their royal fathers long ago, but they don't know each other and don't want to get married. They end up falling in love when they meet each other in disguise. Helena wants her father to marry her to this beloved young man and begins playing the sad princess. She believes that her father will give her to this "low-born" savior, not knowing he is the son of King Henry. Angry at this affair, the advisers of the two kings, Ypsilon and Iks, start a war. Things turn out well due to common sense and the help of a kind nanny…
There’s a tournament in which knights are fighting for the three daughters of King Pravoslav. As Vanda’s and Barbora’s suitors are beating their opponents, Marie escapes into the garden to meet her secret love, the son of the King of the Underworld. Her father wants to pass the crown to the daughter who loves him most. Vanda and Barbora speak of gold and jewelry; Marie talks of her love of salt. Offended, he has Marie taken from the palace and humiliates the Salt Prince. The King of the Underworld curses the kingdom and turns all the salt into gold.
Emperor Rudolf II is more interested in art, beautiful women, and alchemy than in ruling. Most of all, he wants to get the elixir of youth and find the legendary Golem. As he focuses on his hobbies, the supreme courtiers, led by chamberlain Lang, join Rudolph's brother Matyas, who seeks the throne. Due to a mistaken identity, the baker Matěj Kotrba becomes the ruler; he looks very similar to the emperor, just twenty-five years younger. He will deal with the prominent courtiers, issue useful orders, and use the Golem to benefit everyone.
The main heroes are the two awkward devils, Popelák and Uhelák, who are sent out into the world as punishment by Hell's ruler; they have a month to retrieve a sinful soul. Their task isn't so easy at first; instead of guiding people to sin, they inadvertently help them. Disguised as farmhands, they find work on a farm and seem to be successful at last. The calculating farmer wants to marry his daughter Hanička to the vain landowner Kopyto. But Hanička loves Jan, and in order to have a happy ending, they'll need some hellish help.