Nicky and Vicky, two librettists who also happen to be brothers, are presently in collaboration with composer Toni. All too aware of Toni's amorous escapades, Nicky and Vicky try to keep the existence of their pretty sister Hedi a secret. Suffering from an acute case of writers' block (he has yet to find an inspiration for his next production), Toni throws a huge party, which is boycotted by his friends and associates so that he'll keep his mind on his work.
Walter Janssen
as Toni Hofer - ein Operettenkomponist
Oskar Karlweis
as Nicky Mahler - Librettist
Willi Forst
as Vicky Mahler - Librettist
Gretl Theimer
as Hedi
Irene Eisinger
as Anni Lohmeier
S.Z. Sakall
as Der Theaterdirektor
Karl Etlinger
as Der Kassierer Schlesinger
Paul Hörbiger
as Ferdinand - ein Kutscher
Tibor von Halmay
as Der Komiker
August Vockau
as Weigl - Faktotum bei Hofer
Paul Morgan
as Notar Novotny
Gert Bloem
as Franz Schubert
