Ernst Stadler is a successful, award-winning chef with his own gourmet restaurant. His older brother Ludwig is also a chef, but is currently in prison. Adrian, the youngest of the three, is a nurse and gay. When their mother dies, they travel together to the funeral in Saxony-Anhalt. There they find a clue about Wickerl's biological father. They track down Ernst's father in Hungary. He had once abandoned his pregnant mother. Adrian is not a brother in the biological sense; he was adopted by his mother as a foundling. Nevertheless, they come to the conclusion: "And the three of us are still brothers."

Johann Stanzerl sees himself surrounded. All other business premises in his Viennese district are already in Turkish hands. Only his beloved café "Prinz Eugen", named after the famous general who prevented the Turks from taking Vienna, is still resisting with its regular Austrian customers.

A year ago, Katrin and Max got to know and love each other with the support of the phlegmatic bass dog Kurt. Should they now match their friends and marry? At first it doesn't look promising: Katrin is fighting for a job in London and Max is constantly gone, he seems to meet other women. The help of a second Christmas dog is needed to steer fate in the right direction.

While attending a concert, Alexander Haller meets the director of the Vienna seminary, Wimmer. The priest asks the special investigator from the Criminal Investigation Department to inquire about a student who has been missing for days. Haller's call to Inspector Janda provides certainty: the wanted man has been murdered! The first clue leads to the Brohnsteins' aristocratic palace.

For a job, Alina has to accept longer working hours and long business trips. The single mother has to reorganize her everyday life with her daughter Lilia and asks her ex-boyfriend Jarek to teach her the violin lessons. While Lilia finds it difficult to come to terms with the new situation, Jarek soon finds pleasure in contacting violin teacher Clara and her sons - much to the dismay of Clara's husband. When Lilia gets the chance to change to another teacher as a master student, the contact with Clara breaks off. Until Jarek and Clara meet again by chance a few months later.

Theo buys a Harley Davidson. He can afford it. Then he gets a young girlfriend and leaves his wife. However, this does not make Theo happier, but his soon-to-be ex Gabi. As everyone gets along better without him. Family, company, everything is going great. This is not how Theo imagined his new life. Increasingly, he wonders if he really is the jerk everyone thinks he is.

Klaudia Wehmeyer, the proud co-owner of a pastry shop, has to stand trial because her manager Müller and her fraudulent partner Lehmann accuse her of embezzling half a million euros. After she is wrongly sentenced to prison, the spirited woman flees the courtroom in a hurry. Disguised in a Santa Claus costume, she plans to break into Lehmann's villa to gather evidence of her innocence on her own. When the plan fails, she finds shelter with two neighboring children who believe they are looking at the real Santa Claus. However, their single father is anything but happy about the strange guest. Only when he gets to know Klaudia better does he realize that there is more to the Santa Claus costume than a simple burglar.

From one day to the next, Anna, a millionaire's wife from Hamburg, is left with nothing: her husband has absconded with a fraudulent loan and a young mistress. Anna returns to Vienna, where a wealthy friend leaves her her fruit stall at the famous Naschmarkt. However, the sleazy Charly also has his eye on the property. Only Bernhard, a former chamber singer, sticks by Anna, but he too is on Charly's payroll.

A young woman is found raped and bludgeoned to death. Her father can’t reconcile himself with her death, and even less with the fact that the murderer was never found. Half of his life he continues the search. Finally, after more than 20 years, as DNA-analysis becomes a factor in forensic medicine, new perspectives open.