Hans Junkermann

Sylva Varescu is an operetta singer performing Kálmán's Die Czardasfürstin through Europe with great success. Before going to Vienna she meets handsome Prinz Weylerstein and they fall in love. Offered a contract for America, she doubts until she finds out that he is already engaged to a countess.

Composer Franz Schubert becomes involved with a family with three daughters, falling in love with the two blonds, first one, then the other; but will he notice the quiet brunet third daughter, who has fallen madly in love with him?

Johann Strauss helps the business of a Viennese wine merchant and his daughter by showing up to conduct the orchestra at a party.

Gerhard Lamprecht sketches a cross-section of Germany's new post-war society, with its winners, social climbers, and losers, represented by the social microcosm of an apartment building. The gossip-mad Frau Mierig from the rear building gives the newly-arrived Frau Kaminski, the janitor's wife, a lively initiation into the tenants and their peculiarities.

Dr. Mabuse and his organization of criminals are in the process of completing their latest scheme, a theft of information that will allow Mabuse to make huge profits on the stock exchange. Afterwards, Mabuse disguises himself and attends the Folies Bergères show, where Cara Carozza, the main attraction of the show, passes him information on Mabuse's next intended victim, the young millionaire Edgar Hull. Mabuse then uses psychic manipulation to lure Hull into a card game where he loses heavily. When Police Commissioner von Wenk begins an investigation of this mysterious crime spree, he has little to go on, and he needs to find someone who can help him.

A young woman working as a secretary for a Berlin car business tries to impress a rich Australian visitor by pretending she is a foreign countess.

Princess Melanie wants to examine her future husband and pretends to be his maid. His Highness plays the secretary. While a goofy servant mimics the baron, he himself takes time to flirt with the alleged maid.