Sebastian, the creative head of an advertising agency, has just finished a long night and wants to delight his lover with an intimate e-mail. So takes a photo of his best 'piece'. But with a wrong mouse-click posts it to his whole company, with no way to stop it! So do his colleagues also believe that size matters?

The ENT doctor dr. Arnold Fischer, called Arnie, always tries to please everyone. His friend and colleague Gregor is quite different: Purposeful and enterprising, he thinks especially of his own progress. Together, they want to expand the practice to a state-of-the-art tinnitus center. For this they need the neighboring apartment, but lives in the Mathilda, in which the shy Arnie is secretly in love. He does not have the heart to show Mathilda out of the apartment. And so Gregor tries with not always fine methods to get rid of the unpleasant tenant - which ends in a complete disaster ...

Mara Lorbeer, a fifteen year old girl, finds out that she has to save the world because the Norse god Loki is threatening to break free of his chains.

Unknown assailants threaten the life of British scientist Dr. Ronald Fergusson. Only by chance does the attempt to shoot him in the street fail. Fergusson, who does not believe in police protection, hires private detective Weber for his personal safety. And time and again, the headstrong scientist makes it difficult for his bodyguard to fend off further assassination attempts. Despite being expressly forbidden to do so, he leaves the house. Full of bad suspicions, Weber looks for his client in the morgue, but Vivian, Fergusson's employee, doesn't know the dead man...

Electronic data processing is an absolute must in the Information Age. Karl Hoppe, the director of a large plant, is aware of this need for modernization and hires mathematician Dr. Jochen Bernhardt to install computerized systems which are supposed to calculate ways in which the plant could be run more effectively. Dr. Bernhardt is so focused on efficiency that he forgets about the human side of work, causing his girlfriend to leave him and several dissatisfied employees to quit their jobs.