A young woman pharmacist, Eva, is very friendly with a children's doctor, Dr. Fröhlich. Eva's small nephew Peter lives with her and she is often thought to be his mother. A number of amusing and more serious misunderstandings arise from this situation...
Summer in Germany, anno 1970. Italy is the number one destination. As every year, swarms of Teutonic tourists make their way to the Adriatic Sea. Only Willi Hirsekorn from Castrop-Rauxel has so far no plans to break south. That changes, however, as the bitchy neighbor Mizzi Buntje proudly tells of their upcoming holiday in Italy. Willi can not afford this boasting. Shortly determined, the bags are packed, and already rushes Willi in the car with his wife Sieglinde, daughter Lotti and son Kuno the sun.
Principal Gottlieb Taft's twin brother Gotthold Taft partakes in the most recent prank by faking his death and promising a large inheritance to the Mommsen-Gymnasium and the principal. Of course, the inheritance is tied to many embarrassing conditions.
Mommsen Gymnasium director Taft secretly places his nephew as a spy with the difficult class of Pepe Nietnagel. During the celebration for the 100th anniversary, a simulated fire forces the school to shut down for a week. The director's attempt to get a tough teacher assigned by the department of education results in the exact opposite because of Nietnagel's intervention.
Pepe Nietnagel and his fellow students of the Mommsen school come up with all kinds of ideas to get out of doing any actual school work. This includes simulating suicides, setting off the air-raid sirens and abusing the school director's new broadcasting system. They succeed in sending their teacher to a sanatorium and get a replacement that turns out to not be so bad after all.
Eberhard Dobermann is a widower and a policeman who loves to control the roads and let people pay fines. Even with his neighbour and friend Jutta Schmalbach he has no pity. Thus he cannot understand why his daughter Karin just falls in love with a racing pilot called Walter. But it gets even worse when Eberhard wins a VW-Kaefer at the annual police party. So he has to learn to drive and thus even brings his teacher close to a heart attack.