Wäre die Erde nicht rund...

A young married couple is in love. Both believe that the other has it easier in life. To find out who is right in this matter, they swap clothes: Anna slips into a man's suit and Peter into a chic woman's wardrobe. In this outfit, they both drive towards their vacation destination. Of course - under these circumstances, the young couple are in for exciting and unpredictable adventures, as the locals at the vacation resort show more than just platonic interest in their new guests...

The law student Caroline and the assistant professor Tom are husband and wife, but they keep their marriage a secret. While Caroline is afraid of annoying her mother Hella who ever since her divorce twenty years ago distrusts men in general, Tom dreads the criticism of his professor, a family law specialist who objects to the concept of marriage. By chance, Caroline gets hold of some juicy information: Her mother and the professor used to be a couple and she is their child. With almost missionary zeal she addresses herself to the task of convincing the two grown-ups to get back together. In the process, however, she steers both her academic studies and her own marriage into a crisis.

Ralf Paeschke is a film student who has to make a documentary film about a group of women working in a lamp factory. There is brazen Susie, mischievous Kerstin, lonely Anita, single Ella, withdrawn Gertrud and the imposing forewoman. When Kerstin is suspected of stealing, tension among the women mounts. Ralf demands that things be clarified, and his film plays an unexpected role in the matter.

Hans the farmer is drawn into war as a soldier. Returning from the front, having been defrauded of his pay by his own king, he makes his way home. On his trip, he encounters a witch who asks him to fetch the light from a spring. He keeps it when the witch tries to deceive him and he discovers her foul magic. When the light is ignited, a little man appears who must serve the owner of the light, but it only has power if the owner has faith in himself. His courage bolstered, Hans goes to the king once more to demand his wages be paid.

A group of tourists from the GDR spend their holiday at the coast of Bulgaria. When making a trip to a small fisher house, they have to stay they night, because the ship's motor broke down. One of the group proposes a game: Someone has to be a corpse, one the detective and another one the murderer. But shortly after starting the game the "corpse" has vanished only to befound at the foot of the nearby cliff - being dead for real. Now the group start their investigation...

Three people from very different walks of life meet at a large construction site. Young, unmarried, self-confident construction manager Linda Hinrichs dedicates herself completely to her work and enjoys living more independently then most women. Daniel, a student works on the construction site to make money during his summer holiday, and impresses Linda with his spontaneous energy and idealism. Brigadier Böwe, an older, divorced man works his way from one construction site to the other and has lost his own personal happiness on the path to developing what was seen as officially suitable social standards. Both men try to win Linda over, not realizing that they are taking her freedom away from her.

Maja Wegner is in her late thirties and a single mother of a teenage daughter. To give her stale life a new direction, she decides to start all over again in the big city. She sells her house in the countryside, quits her job, and moves with her daughter to Berlin. There, she finds a job as a conductor for the railroad company. Although Maja soon finds new friends in her apartment building, the search for a new life partner does not come off so easily.