The darling of Vienna, Willi Forst stars in this fantasy musical comedy in the rare profession of the keynote speaker. After numerous weddings, anniversaries, baptisms and funerals, he also has to step in for a speech-inhibited professor in a lecture on the subject of "marriage". In the process, a baroness falls in love with the voice - and the speaker then has to make the professor's voice during a rendezvous with the baroness. Which in turn brings the girlfriend of the keynote speaker on into the charming conclusion.