Ernő, under a pseudonym, takes up a position as a music teacher at a girls' school under the patronage of his grandmother, Countess Szerémy, to meet one of the pretty students, Martha, who later turns out to be the child of her grandmother's disowned son. The Countess agrees to the young couple's marriage, but Márta falls in love with Colonel Örkényi's nephew Kálmán. In the meantime, Ernő's feelings change, and he meets Kálmán's sister Piroska, whom he would prefer to marry. The Colonel, whose planned marriage to Countess Serémy was prevented by her mother when he was young, refuses to hear of it.