A poor musician with a good heart, as a reward for sharing even the last piece of bread despite being hungry himself, is rewarded with a miraculous napkin on which the best delicacies appear. However, a greedy innkeeper steals it from him along with a miraculous donkey from which ducats are pouring...
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.
The Emperor's mismanagement of his country is provoking some in his court to plot to overthrow him. He feels successful, at least, when he discovers the legendary Golem, which he believes can protect him and even cure his imaginary illnesses but, when he disappears while on a bender, his kindly baker, who looks just like him, is mistaken for him, and begins to put things in order. However, the conspirators, not to be outdone, determine to bring the Golem back to life to do their bidding.
