The Portorican prime minister asks British detective Sherlock Holmes to find a twin for King Fernando XXIII, a weak and frightened man who fears anarchists and does not want to show himself in public. Holmes finds in the Czech newspapers a photo of the perfect double, František Lelíček, a daring bon vivant drowned in debt, so when Holmes offers him money, Lelíček decides to travel to Portorico and play the role.

In Transcarpathia, Prince Laborets wields a divine ring that ensures his land’s peace and prosperity. Ambitious Hungarian Zoltan seizes the ring after defeating Laborets, unleashing centuries of oppression. Generations later, Prince Fedir Koryatovych leads a revolt to reclaim freedom and restore the ring’s legacy.

Military doctor Katz loses to his servant Josef Švejk at cards. Švejk steals a dog for his new superior, Lieutenant Lukáš. While walking his dog, Lukáš meets Colonel Kraus, who is displeased to discover that Lukáš is taking his dog with him. As punishment, he sends Lukáš to a marching company in Budějovice. Lukáš is accompanied by Švejk, who first insults a general who is travelling in civilian clothes in the same compartment. Then Švejk unexpectedly stops the train by pulling the emergency brake. For this act, he is brought to Tábor for questioning. Before the questioning is over, Švejk's train leaves and he has to walk to Budějovice...

E. A. Longen's return to the director's chair after 20 years: The story is about reservists on a military exercise. Non-soldier Kohout has to pose as an officer because he is representing his "busy" employer.

The owner of a clothing store, Mr. Načeradec, spends most of his free time in a café, where he plays chess with the owner of a rival store, Mr. Dundr, over mineral water. Načeradec's daughter Edith, coincidentally, starts practicing law at the same time as her boyfriend, Dundr's son. Mr. Načeradec often fills in for Mr. Findajs at the card company, who is currently dedicating himself to the wife of another player, Mr. Tachecí, the owner of a detective agency. Načeradec keeps his winnings, Findajs has to pay for the money he loses. One day, Mr. Načeradec is so unlucky in the game that he and Mr. Dundr get into a heated argument that ends up in court. Both men are represented by their children, who are rather amused by the situation.

Vincenc Babočka, an insignificant employee of the police station, plays detective in private, convinced of his exceptional abilities. However, a vacation in Karlovy Vary unexpectedly gives him the opportunity to prove what he is really capable of. He is mistakenly considered to be the international adventurer Leon Weber, who is being pursued by the police. He decides to take advantage of the confusion and expose Weber's accomplices, who are planning to steal diamonds belonging to the Maharaja of Yohir. According to Weber's plan, he meets the Maharaja disguised as General Naryshkin, but everything only works out until the real Weber appears in town...