In the face of two world wars, Professor Prätorius, a philanthropist and a surgeon, wants to exterminate the one danger to mankind, the microbe of stupidity, as he states in a spontaneous lecture to his male and female students. When he tries to help a pregnant girl he gets involved more and more in her life and is forced to marry her.
Curt Goetz
Dr. med. Hiob Prätorius
Valerie von Martens
Maria Violetta
Albert Florath
Pastor Höllriegel
Erich Ponto
Professor Speiter
Bruno Hübner
Rudolf Reiff
Paul Mederow
Hedwig Wangel
