Due to a plot by the teaching staff, headmaster Taft is forced into early retirement and Knörz is appointed headmaster. However, they didn't count on class 13a, and especially not on their spokesperson Pepe Nietnagel. They are anything but happy about losing Taft, their favorite enemy. Without further ado, Pepe and his friends join forces with Taft and hatch a series of daring pranks to get back at Knörz.

The Orient Express, on its night trip from Munich to Venice, is full because of the beginning of the carnival in Venice. Between the passengers are a young writer, an actress, and her daughter, an elderly dancer, five neo-nazi punks, and a strange man that seems to have some kind of influence over them through their dreams.

Tells of the tribulations of a middle-aged official of the Austro-Hungarian Bureau of Weights and Measures in fighting the local shopkeepers and traders whose weights are frequently light.

Pepe Nietnagel's father has a valuable stamp collection stolen in Amsterdam. Street musician Pit recovers it. To show his gratitude, Pit is invited to Baden Baden and enters the Mommsen Gymnasium. There, he joins Pepe in his pranks.

The young Count Ettingen leads a dissolute life in Munich with the demanding Baroness Prankha at his side. To finance his life, he has his uncle cut down the forests in his estate without caring about the consequences. When he catches his girlfriend having an affair, however, he retreats to the mountains. From the young alpine dairymaid Lore he learns about another side of life and wants to stop the overexploitation of the forest. But the baroness still wants his money.

The son of actor Robert Drury is kidnapped, and a strange visitor arrives.