The mechanic Behnke wants to join the Nazi party to secure a good living. However, after his Jewish neighbors have been taken away, he changes his views. Trying to remain "a non-political man," he withdraws from reality and becomes a Nazis laborer.
Trece maletas caras, marcadas sólo con las iniciales O.F., y un telegrama con una reserva llegan al hotel del aburrido pueblucho de Ostend. Todos los habitantes especulan sobre el misterioso visitante. El editor del periódico local aprovecha la ocasión y asegura que las maletas pertenecen a un millonario que está de vuelta a su hogar, y enseguida el pueblo rebosa de actividad. Se ensaya una fiesta y comienzan a construir un cine, una ópera, un ayuntamiento. En medio de una época en crisis Ostend vive el auge de la ciudad y se convierte en un símbolo para la economía mundial.
Vehículo musical para la prometedora Dolly Haas, como actriz con un novio compositor. Canta, en un momento, que tiene el andar de (Lilian) Harvey, la boca de Garbo y las piernas de Dietrich.
Peter Verdy falls in love with Lola (Ossi Oswalda) who is mistaken for a boy when she appears in stage regalia before a rich uncle who has other marriage plans for his nephew. The tangle ensuing is finally sorted out with excellent results all round.
The film starts with a woman on the run from her millionaire husband giving birth to a daughter in the home of a washerwoman. The woman dies in childbirth, but the baby survives. The washerwoman leaves the baby in a horsedrawn Parisian taxicab (No. 13). The paperwork of the birth is lost in a huge tome. Sixteen years pass. The tome is bought by a poor student. One day his bookshelf collapses, and the tome opens at the page where the paperwork has been hidden. The student realises that the paperwork relates to a millionaire who has spent the last sixteen years looking for his pregnant wife. The student traces the washerwoman, and he tricks her into confessing what she has done with the baby. Meanwhile, the baby has been adopted by the cab driver and his wife, and has grown into Lili Damita.