Prim professor Immanuel Rath finds some of his students ogling racy photos of cabaret performer Lola Lola and visits a local club, The Blue Angel, in an attempt to catch them there. Seeing Lola perform, the teacher is filled with lust, eventually resigning his position at the school to marry the young woman. However, his marriage to a coquette -- whose job is to entice men -- proves to be more difficult than Rath imagined.
A girl from a boarding school finds a baby and has to keep it because she seems to be the real mother to everyone.
Operetta star Gitta Alpar plays a singer engaged for a performance at the Savoy Hotel, where she mistakes Baron von Wollheim for a waiter. But the baron is content to play the game for a while and changes his role with the real waiter. Of course the singer is quite happy when she discovers the real identity of the baron, but now she mistakes him for a thief, as her necklet has gone missing. Further complications arise when the baron's cousin Mary, a composer, arrives at the hotel and wants a music publisher to listen to her songs.
