On the request of his mother Gitte, Marko, who has been living in Berlin for years, drives off to the countryside to visit his parents. His hopes of spending a quiet and relaxing time with his family fall short when Gitte surprises everyone by revealing that she has recovered after a long mental illness. Marko is the only one who respects her wish from now on to be treated as a full member of this family and, as a result, ends up tipping more than just the delicate balance of his parent’s seemingly harmonious relationship.

In a hospital in Hamburg, an unidentified woman is disconnected from the life-support system. While the investigators search for the mysterious perpetrator, two more men are murdered.

Two very different brothers: Gregor (32) and Pietschi (30). Whereas one is reliable and committed, the other is spontaneous and aimless. Gregor is married and is a good doctor; Pietschi in contrast is something of a ladies’ man and a hedonist. According to tradition, the two see each other at least once a year for a weekend of sailing. But this year Pietschi drops out without leaving a message, and simply disappears. Gregor’s life goes on, but he is confused and searches everywhere for a sign of his brother’s whereabouts. The more Gregor realises how little he knows about his brother, the more he becomes fascinated by these things he doesn't know. And the longer Pietschi remains missing, the more obsessed Gregor becomes with his brother’s fading echo, even going so far as to try and slip into his brother’s life. But what happens when one of them suddenly disappears from the mirror image? Can the other continue to be the person they are. Or rather, were?

The thin line between happiness and disaster: Jakob cancels a business trip to New York City because he finds out his ex-girlfriend is coming to a party in Berlin on that day: 9/11/2001. His friend Hans goes to the US instead.

The two washed-up TV stars Micki and Ginger and the unemployed physicist Reno try to kidnap a young woman. But one of the three kidnappers suddenly doubts the value of the money and drives his accomplices mad. The kidnapped woman is already missing. Three children from a good family are looking for their sister: the dutiful Junior, who counts up his day in seconds, his brother Adrian, who, by contrast, thinks life is one big family outing, and Sophia, the artist, who never finds the real thing in life.

Autistic Florian works as an assistant to facility manager Henk in a luxury hotel and is secretly in love with chambermaid Valerie. When it comes to communication, however, the smart guy has his problems, which is why he usually finds it difficult to deal with other people. Meanwhile, Valerie, who unlike Florian is extremely chaotic, pays little attention to her admirer and has other problems to deal with anyway: she is trying to regain custody of her daughter, but is in danger of losing her job as a result. Florian is immediately on hand to help her and is also actively supported by his boss. But can he really win Valerie's heart this way?

A couple have disappeared without a trace on their way home after a medieval festival. This calls not only the officers from Brandenburg onto the scene, but also the currently sidelined investigator Lucy and her former colleague Hannah. During their investigations, they come across the widowed Harald Kurtz and his father-in-law Meckenstock, who live on an outlying farm. Meanwhile, Hannah suffers from hallucinations and finds out more about the family.