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 long time ago, John Miller emigrated from Germany to America. Now he wants his daughter Elinor to get to know his old homeland and sends her off to Heidelberg, where she is to study for a year. Pretty soon, the pretty young girl is in demand among the young men in town. Especially the students Dahlberg and Bornemann try to win Elinor's heart.
By pure chance, Jessie and his four jazz musicians are hired to play at the cabaret theatre “Trocadero”. Unfortunately, she knows nothing about music and it doesn’t help that all four musicians are in love with her. Jessie doesn’t reciprocate their feelings, because she has a thing for Martin. Unfortunately, Martin believes that Jessie stole his car … and so, right before the premiere at the cabaret, she ends up in jail.
