At the beginning, everything looks like a normal job. But in the apartment of a cruelly murdered woman, Judith Kepler, a crime scene cleaner by trade, encounters her own past. The dead woman had done research and wanted to contact Judith. And she knew her closely guarded secret: Judith had been brought as a child under mysterious circumstances in a DDR children's home. Origin: unknown. Now, 25 years later, Judith has the evidence in her hands that she was swapped as a child. A stranger lived her life. Did this stranger also die of her - Judith's - death?

Three couples, six friends and the threat of retirement age: when TV journalist Paul quits his job at the age of 65, neither he nor his wife Christiane (59) had any idea that their relationship would be put to the test. Neither did personnel manager Marlene (62) suspect that her husband Klaus (64) had been having an affair with a younger woman for years, who is now expecting his child. And everything changes between high school teacher Heiko (63) and his wife Vera (62) when he is diagnosed with a brain tumor. Three couples, six people and the 60-plus agenda: what remains is their friendship.

Chlodwig Pullmann is a tax inspector and is involved in a thousand little deals and tricks - with the knowledge of Mayor Karsten Leimer, who has a lot more dirt on him. Pullmann's wife Jenny, on the other hand, fights against corruption in a citizens' initiative and is of course not allowed to know anything about her husband's deviations. When Pullmann gets a new superior who keeps a close eye on him, things get tight - and in order not to jeopardize his marriage, he decides to go straight. The only question is whether he will succeed.

In the German North Sea a new cellular life form endangers mankind.