A nobleman gradually falls in love with a woman he was forced by relatives to marry, against his will.

As a young man, mustard manufacturer Ludwig Klinke had an affair with a dancer, the “Spanish Fly”. The dancer had a son and Klinke has been secretly paying maintenance ever since. Wimmer and Tiedemeier also had a relationship with the dancer. With the appearance of the dancer's supposed son, Heinrich Meisel, chaos breaks out.

Two twin brothers working in a Vienna fair and who are both gifted for singing meet different luck both in love and their careers.

Banker Rudi Moebius and his counselor arrive in Wien for an arranged marriage which should solve their financial problems. Only they don't know, but Lucie Weidling is broken too, and in love with Gustl, a musician without the courage to elope. Meanwhile Rudi meets Steffi and falls in love not even knowing her name. He and Lucie become good friends and decide to help each other.