Pauline is very disappointed by her boyfriend. Fearing lonely holidays, she accepts her boss Max's invitation to celebrate white Christmas in his parents' mountain hut. It is taken for granted that she is Max's girlfriend. He enjoys the misunderstanding and asks Pauline to play along.

Anna Grawe is the right-hand woman of Bea Kober, a member of the Bundestag. When she learns that the public prosecutor's office is investigating her boss, she becomes suspicious. The connection to oligarch Parygin makes everything even more complicated. What Anna doesn't realize is that her daughter Larissa had an affair with Parygin.

Architect Sophie has finally found a beautiful apartment where she wants to move in with her boyfriend Martin. But although his marriage has long since ended, he is reluctant to leave his wife and daughter.

What use is a good Abitur if the climate is changing? For 17-year-old high school student Lilly, there are more important things than school. It looks correspondingly bleak with their admission to the Abitur! While father Martin fails with a bang to lure her with a dream trip, mother Nina makes an unusual deal: if Lilly really crams from now on, her parents will in return help protect the climate. From now on, only fresh food will be cooked at home, lavender will replace industrial washing powder and you can go to work by bike! There are only exceptions for little brother Tom. But the road to an emission-free life is not a sure-fire success. After weeks, agency owner Nina and chief physician Martin are not only looking for secret exceptions to the rules, but also get into discussions about their lives up to now. And since Lilly doesn't quite stick to the deal with her parents either, the initially abstract discussion about climate-friendly living escalates into a true family crisis.

Macedonian Don and his buddy Kalle have been friends since childhood and have practically spent their whole lives together. They now live together in a shared flat and are about to graduate with a brilliant degree in civil engineering when terrible news arrives: Don is to be deported after all these years in Germany! What's more, his mother sends him a cake from Macedonia - Don thinks he's supposed to marry his promised fiancée Hatice... Don and Kalle, machos of the finest kind, start to panic. Only Hedi, the neighbor who studies psychology, stays cool and has the idea that saves the day: Don should simply enter into a sham marriage so that he can stay in Germany... But it's not that easy, because Don and Kalle have only ever used women and seen them as sex objects...

Moritz Kaiser, good-looking single from passion, enjoys the carefree life in the fast lane. The successful chief designer of a furniture company lives in a luxury apartment and drives a thick sports car. The tide turns when he is fired after an affair with his boss's wife and finds no job. After unsuccessful lavatory cleaning, he lands at the small furniture manufacturer Toby Breuer, who wants to hire only a seasoned family man according to his alternative corporate philosophy.

Maja could hardly be happier. She loves her husband Konrad and their two children more than anything and things are also going well professionally, having recently taken up a promising position as a molecular biologist in a renowned clinic after completing her doctorate. But one day, a motorcycle accident involving her husband has serious consequences. After a minor operation on his leg went without a hitch, Konrad's condition deteriorates rapidly a little later. It soon transpires that he has been infected with dangerous germs in hospital. As the hospital treating him is Maja's new workplace, her boss Professor Adler, who would prefer to sweep the matter under the carpet, is not at all happy for her to investigate on her own. And she soon discovers some shocking facts.