Martin and Nicole meet each other in a train, after Martin passes out of exhaustion. After Nicole helps him, he immediately falls in love with her. One year into their relationship they decide to introduce her to Martin's children at a Christmas dinner. But it does not go well at all...

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Nicole Lehnert came to work at an escort service through her friend Inès. It finances her law degree. Over dinner she met the much older Friedrich Benning - rather by chance. Friedrich's colleague Lars Albers had booked the meal through the escort agency. Nicole likes the charming, successful banker who falls in love with her.. He rents her an apartment and buys her fancy clothes. Friedrich doesn't understand that it will soon be too much for Nicole. She can no longer concentrate on her law studies, does not pass her exams. When Nicole got to know the up-and-coming start-up entrepreneur Josch, who was the same age, her relationship with Friedrich cracked. The drama of mutual dependencies takes a tragic turn.

Dr. Robert Siedler is an experienced forensic psychologist who is asked to prepare an expert opinion for the mentally disturbed ex-alcoholic Friedhelm Knecht, who has been in custody for a long time. According to his expert assessment, he is in favor of releasing the offender, whereupon Knecht is released from prison. Shortly afterwards, however, there is a murder in which the evidence points to Knecht as the perpetrator. The suspect goes on the run and when the case causes a stir in the press, Robert is quickly found to be the scapegoat and blamed for the murder. Robert himself is shocked: has he misjudged a case for the first time? Or was his expert opinion justified and is Knecht innocent?

Several episodes set on Christmas Eve.

Astrud, Iris und Marie sind um die fünfzehn, nicht gerade schüchtern und fürchten nichts mehr als Langeweile. Das Trio verbindet eine Vorliebe für makabre Wetten, und als sie feststellen, für den gleichen Mann zu schwärmen, beschließen sie, das Patt durch eine Wette zu lösen. Ray, Rockstar kurz vor dem Durchbruch, ist der Wettgewinn. Wilde Gerüchte von Drogenexzessen, Sex mit Minderjährigen und Gefängnis prägen seinen Ruf.

Frederike Bader, a former policewoman from Berlin, currently living in witness protection in Passau, is supposed to help her ex-boss Jochen Mohn - formerly a witness protector, now head of the Passau CID - in a private matter.

A ship, a bus, a pastor, a businessman and a lot of alcohol.

Johanna (Valerie Huber) and Anton (Timur Bartels) have been in seventh heaven for almost a year when planning their Christmas together at the beginning of November put their young happiness to the test. While the two would prefer to spend the celebration of love, which also coincides with their anniversary, alone, their families exist, especially Johanna's father Prof. Dr. dr Dietrich Hansen (Uwe Ochsenknecht), on old traditions and demand the respective presence of the two. Johanna has the saving idea: her brother-in-law Oliver (Wayne Carpendale) owns a chalet in the Austrian mountains. The house is big enough for both families and the perfect setting for the first extended family event together. As generations, cultures and social demands collide, in the midst of the family drama, Anton prepares to ask Johanna the question of all questions - chaos inevitable!

Like many other couples, teacher Sina and doctor Carl have lost their love in everyday life. They have filed for divorce, and their last words together were exchanged a long time ago. But on Christmas Eve, the disappointed husband and the overwhelmed single mother meet again on a crowded train between Salzburg and Munich. Old wounds are reopened and the two are back in the middle of the most beautiful marital tiff. In the best screwball tradition, male logic and female perspective collide. When the train gets stuck in a snowstorm, the angry couple's nerves are on edge. In their anger, Sina and Carl not only forget themselves, but also their son Felix (10), who is traveling with them and is completely overwhelmed by their arguments. But the other passengers also have their worries, and it is only when the situation in and around the train escalates that Sina and Carl come to their senses.