Frank returns to his homeland as an engineer, falls in love with Regine, the housemaid of his uncle, and marries her. Thanks to the intrigues of Floris, one of Frank's rejects, Regine is suspected of having an affair with another man. Depressed and desperate, she intends to commit suicide, but is saved by Frank in the last minute.
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.
By his father’s deathbed, a young man agrees to never marry below his station. Later, he falls in love with a lowly governess, impregnates her, and does not marry her. Many years later, as the President of the court of his town, he finds himself having to rule on his illegitimate daughter’s case of infanticide.