In the future, Simulacron, a computer project simulating reality, encounters strange occurrences after its leader's death. Dr. Stiller questions the sudden disappearance of a friend and wonders if Simulacron holds the answers.

The sprawling story of the everyday triumphs and travails of the young toolmaker Jochen and many of the people populating his world, including the woman he loves, his eccentric family, and his colleagues, with whom he bands together to improve conditions on the factory floor.

Emmi Kurowski, a cleaning lady, is lonely in her old age. Her husband died years ago, and her grown children offer little companionship. One night she goes to a bar frequented by Arab immigrants and strikes up a friendship with middle-aged mechanic Ali. Their relationship soon develops into something more, and Emmi's family and neighbors criticize their spontaneous marriage. Soon Emmi and Ali are forced to confront their own insecurities about their future.

A group of young slackers spend most of their time hanging out in front of a Munich apartment building. When a Greek immigrant named Jorgos moves in, however, their aimless lives are shaken up. Soon, new tensions arise both within the group and with Jorgos.

Technical draftsman Herr R. is a dependable guy. He gets along with his colleagues although his boss wants him to go beyond technical cleanliness to problem solving. He's a dutiful husband; his wife's a social climber and pressures him to seek a promotion, but they also share sweet moments. He's a caring father, helping his son with homework. His parents visit; his mother criticizes his wife. Old schoolmates drop by, as do neighbours. Some comment on his wife's expensive tastes. His promotion may be a long shot, especially after he gives a dull and tipsy toast at an office dinner. But why would Herr R. run amok?