There are still water spirits among us. One group lives in Prague, led by Mr. Wassermann, who is using his wife's family as a servants. All they need is their old house near the river. But the house is to be demolished. They have to stop it. And the only way is to drown Dr. Mrácek, who is responsible for the demolition. But he falls in love with Wassermann's niece Jana. He changes to fish, is mistaken for water spirit from Germany, is drowned and revived again. The other problem is the flour with ears... and so on...
The young Prince Charles (Jaromír Hanzlík), the future King of his country Charles IV, is being educated at the French court in the company of his fiancée Blanche (Daniela Kolárová). One day he receives a summons from his father John of Luxembourg (Milos Kopecký) in Italy. He leaves for Italy accompanied by a deputation from Bohemia. On the way the prince's company fights a battle with armed Milanese against heavy odds. Thanks to Charles's perspicacity, the prince's almost naked soldiers win through. In Lucca in Italy Charles joins his father, and here he experiences an amorous adventure and escapes from the traps laid by the Italian rebels.
