Since Benno Geyer fails to pass his Abitur due to his panicky exam anxiety, Dr. Fritz Geyer enrolls in high school under his brother's name. As a model student, he has no trouble getting good grades, but he quickly becomes unpopular among the students. From then on, he tries to impress with the craziest pranks.
Peter Alexander
Dr. Fritz Geyer
Cornelia Froboess
Reny Pacher
Gunther Philipp
Dr. Erwin Berthold
Gusti Wolf
Frl. Puppernick, Sekretärin
Wolfgang Jansen
Benno Geyer
Rudolf Carl
Erich Pacher
Elisabeth Epp
Mathilde Pacher
Joseph Egger
Dienstmann
Adrienne Gessner
Elisabeth Geyer
Franz Stoß
Prof. Kramm
Otto Loewe
Dr. Oberwasser
Edith Steinacher
Uschi, Bennos Freundin