A taxi driver in Berlin refuses to give up his horse and switch to motor transport.

Auguste is an aging prostitute who falls in love with Felix, a younger student. While Felix has strayed away from his parents, Auguste starts taking care of him and spends her life savings into a cake shop to move further away from prostitution, but trouble comes when another woman enters the picture.

The Arch-Duke Herr Sixtus especially cares for Arts and particularly for young ballet students. The same is true of the Arch-Duke A.D.C., Herr Count Paul Paladin who shares with the Arch-Duke a special affection for Frau Elisa Jenkins, a young ballet student. Unexpectedly and thanks to a misunderstanding involving Frau Elisa and the Arch-Duke, the young student will become the new Prima Ballerina of the "Wiener Staatsoper".