When Prince Vain got his shirt fixed, he proclaims that he had slain two lizards in front of the tailor's house - "two in one strike". When the tailor swats seven flies at once, he sows himself a banner saying "seven in one strike", and together with his bird he starts a journey into the world to pronounce his deed.

Berlin in 1878: Corinna Schmidt, who was brought up in a petit-bourgeois, academic family, is romantically interested in Leopold Treibel, the son of the lordly councillor of commerce Jenny Treibel – although Corinna is also deeply in love with her cousin Marcel. Leopold is also falling for cute Corinna, and Jenny Treibel tries to prevent their friendship by all means, but changes her opinion when their secret engagement becomes public. To avoid a scandal, she urges them to marry quickly. But Corinna soon withdraws from this complicated situation and again turns to her cousin, who is banished from the country for his social democratic beliefs.

New teacher Heider takes up his post with great enthusiasm. His unconventional ideas meet with incomprehension and mistrust from the old head teacher Ruppert. When a boy has an accident on a school trip, the children blame Heider. The parents turn against him and he is suspended from his job. But Ruppert has come to respect the new boy. He does not believe he is to blame. Meanwhile, the children are preparing the next mischief. They want to blow up a ruin with explosives found in the forest. Heider is able to prevent this at the last minute. He is rehabilitated and everyone happily awaits his return to school.

Based on the records of the Nuremberg trial of the chemical giant IG Farben; a story about the collaboration between international corporations and Nazi scientists, whose research contributed to the death of millions. The chemist Dr. Hans Scholz lives through a tortuous political transformation and maturation process. Eventually, he adopts political neutrality and closes his eyes to the fact that the poison being produced in his factory is being used in the extermination camps. Standing before the judges at the Nuremberg trials, he must face the fact that he is implicated in the deaths of millions in the gas chambers of the concentration camps.

On the Faroe Islands, people eke out a meagre existence by catching birds. Merchant Brause pays them little and does a good business. This comes under threat when Dr. Sten Horn suspects that the dangerous annual plague, which kills dozens of inhabitants, is transmitted by birds. Brause forces the people to work anyway and conceals the telegram from the Copenhagen research institute that confirms Horn's suspicions. Horn, supported by his cousin Arne, enlightens the islanders and the greedy Brause can only flee.

Germany in 1949: The residents of the Thuringian village Hunsdorf are still heavily influenced by archaic superstition and explain unusual events with preternatural powers. The same happens when pigs again and again disappear from different farmyards. The village residents firmly believe that witches are the reason for this mystery. Not even police detective Kühlemann who is sent to Hunsdorf is able to dissuade them from their superstition. Thus, the farmers think his investigation is aimless and they do not support him at all. With a lot of patience and well-made arguments he finally convinces little Peter that there are no witches. Next, Peter’s grandfather and teacher Marianne take Kühlemann’s side. With their support, the police detective eventually finds out the truth and is able to put a stop to the gang of crooks that had been stealing the pigs.