This Czech sophisticated romantic comedy, filmed by director Anton also in a parallel French version ("Une petite femme dans le train"), casts beautiful Czech star Baarova in the role that Meg Lemonnier played in the Gallic version.

Eman Vovísek drinks away his unrequited love for Liduška, who married his cousin, the factory owner Danek. Because Eman is aggressive when drunk, he is taken to a mental health facility, where he meets his uncle Hanibal. Hanibal has a breakdown after his wife Matylda broke up with him. Matylda wanted to be free so she could marry her first love, Uncle Jonathan, who is due to arrive from America. Jonathan sends a telegram saying he will stay in Paris. Such a situation does not suit Danek. He assumed that Liduška would be visiting from America and that he himself would go to his mistress in the meantime. He therefore visits Vovísek and persuades him to play the role of Jonathan.

The captain of the Prague shipping company, Adam Korkorán, lives his dreams of commanding ocean liners, even though in reality he only sails a small steamer on the Vltava River. The company's management still has problems with him, so when Korkorán refuses to retire, they at least send him to a spa. However, at the train station in Poděbrady, a servant from the most expensive spa hotel accidentally takes away his suitcase with the luggage of a rich lady. As a result, Korkorán is mistaken for a corvette captain and a rich man. Dazzled by the luxury, Korkorán befriends a retired admiral and begins to play a game with the spa guests and himself. He is even declared the most popular guest of the season. When he runs out of money, he writes to his housekeeper to send him all his savings. The horrified woman decides to go to Korkorán, and the truth comes out...

Postman Brabec is a welcome guest of the revue theatre for his sense of humor, and he brings his director Holt letters from female admirers every day. Holt's fans include Brabec's sister Anny. The girl would like to join the theatre, but for the time being works as a maid for the actress Velden. A new revue is being rehearsed, the name of the author is secret. Veldenová will return the role just before the premiere because she doesn't like it. The quick-witted Brabec introduces the director to his sister, who knows all the parts by heart.