Maria, Argentinien und die Sache mit den Weißwürsten

Grandpa Oskar takes neither the truth nor himself very seriously. The rascal has just been released from prison, where he was serving a sentence for imposture. Since the ex-con needs a place to stay, he quartered himself in the old construction trailer in the farthest corner of the garden of his daughter Tilda, who is still mad at him. The senior soon meets his autistic granddaughter Fanny, whose antics and peculiarities threaten to break the family under. In contrast to the old man, the 8-year-old takes the truth very seriously. In order to gain their trust, Oskar does not introduce himself to the comic-loving girl as the criminal grandpa, who has been missing for years, but as Professor Krypton. For Fanny, who prefers to wear a brightly colored superhero costume and is teased at school for it, the omniscient mentor from the Superman planet comes along just at the right time, because she has a dream: To win the talent competition at school!

Reporter Laura Verhofen is a self-confident woman. She made a career for herself and yet, as a single mother, she was always there for her daughter Karin. Karin admires her mother, but she doesn't understand why there are never any men in Laura's private life. Even the identity of Karin's father is a taboo subject. So the young woman sets out on her own to shed light on Laura's past...

ENT doctor Katrin Schwitters meets a charming stranger on a training trip who brazenly introduces himself as a Russian secret agent. Due to a storm, the two are stranded on an island in the North Sea and spend a wondrously playful evening together. Katrin also slips into the role of an agent on a secret mission - "real" life is left out of this exciting flirtation.

Since Nina met Daniel for the first time, she hasn't been able to get him out of her mind: he's smart, attractive and mysterious, and the two of them keep meeting again and again, seemingly by chance. Nina gets involved in an affair with him, experiences exciting erotic adventures, explores the limits of her desire - and risks her marriage to Sebastian. Then she finds out that the two men know each other. This knowledge ends up completely messing up their world...

Matthias is hopelessly overwhelmed when suddenly his mother Gisela is at the door. After a thigh fracture she sits in a wheelchair and needs help. When Matthias learns that Gisela has discharged herself from the rehab clinic, he realizes that she needs new life courage and is desperately looking for a solution. It comes quite unexpectedly from Tom, Gisela's ten-year-old grandson: Grandma needs a worshiper! The unusual plan works. The anonymous love letters, written by Matthias himself, enchant his mother. But when she wants to meet the unknown, all the dizziness threatens to fly up.

Klemens Kurz is a family man, a successful meteorologist - and autistic. He has Asperger's Syndrome, which means he takes everything literally, is a logic genius and has a special relationship with his emotions. When he was offered an attractive job for a research project in Svalbard in the Arctic, he quickly told his two teenage kids, Nelli and Carlo, that they were going to the far north. And Grandpa Arthur should come along too. No option for the three, a plan has to be found! In order to dissuade Father Klemens from his plan, the teenagers try to find a wife for him by all means of modern online dating. But as a person with a special relationship to his feelings, this is not an easy endeavor.

57-year-old Hilde likes to lead the way - both in her family and at work. That's why she regrets having failed with her own restaurant years ago. Now she may be making her umpteenth new start at the Quincy's burger chain, but she remains true to herself: she only sticks to rules that make sense to her! When Hilde is dismissed by the branch manager, her own son Tommie, she puts all her eggs in one basket: together with her two friends, whom she already had on her team as canteen manager in GDR times, Hilde wants to take over the sports hall and offer home-made burgers there - not ordinary hamburgers, but "McLenBurgers"!

Once during a party two friends get an idea: let's exchange wives...

62-year-old company boss Anton is happily married to 41-year-old successful lawyer Johanna, his business is doing well and his daughter Marie and son David are finally standing on their own two feet. So it's time for his long-awaited move to the countryside and to tackle the renovation of a house by the lake. However, when Johanna becomes pregnant and he also becomes a grandfather, his focus changes and he decides to be a full-time dad this time. However, being a model dad and company director at the same time proves to be anything but easy, and so not only does he mess up an important job, he also falls out with his children...

Despite being 45, Werner still likes putting on the style and enjoys being a womanizer, who usually ends up in bed with the female guests that stay at the hostel in which he temporarily works. But then, Werner has to learn to take on responsibility. When he was 18, he and his former girlfriend Tine, had a daughter called Julia, who is a mother herself now. Whenever she is in desperate need of a babysitter, she approaches Werner, who then grudgingly accepts. But Werner has discovered that this new "job" is a real godsend, as when he takes his granddaughter to the playground, he is a great hit with the ladies. He especially likes Kathie, who comes there with her little son Finn. Of course, he can't let her know that he is a granddad and so he says that he is Zora's father… and to Julia's surprise - but also joy - he wants to babysit Zora as often as possible.

Hilde's restaurant is booming! Hilde and her colleagues can look forward to plenty of customers with their unusual meatball creations. But the cash register is not doing well at all: too many free burgers for the needy call the tax office into action. Hilde goes into a tailspin when Angie and Lore throw in the towel.