Two Afro-German half-sisters that never met before, get closer through their father's death, search their roots and find themselves.

Alma is a scientist coerced into participating in an extraordinary study in order to obtain research funds for her work. For three weeks, she has to live with a humanoid robot tailored to her character and needs, whose artificial intelligence is designed to be the perfect life partner for her. Enter Tom, a machine in human form in a class of its own, created solely to make her happy.

Hans and Anna – together they make the Hannas: A hefty couple who love to cook. They meet sisters Kim and Nicola, both anorexic and excitingly different. Opposites attract, however, and anything goes, so the Hannas each wind up having an affair without the other’s knowledge. But Kim and Nicola have a secret of their own in store.

Johann Friedrich von Allmen and his partner Carlos get caught up in a new adventure in which the disappearance of a very valuable koi plays a crucial role.

Leonard and Judith have little in common. To be more precise: almost nothing. He is a professor of mathematics who loves solitude and avoids other people. Judith, on the other hand, enjoys being around people at her job in the campus café and gets involved in unusual ideas.

Criminal investigator Philip Nabrow is tasked with solving the murder of two police officers. When the case starts to focus on a boxing club, his daughter Elisa, who works in the drug squad, also becomes involved. Cooperation between father and daughter proves difficult, as Nabrow has a secret that he wants to hide, and not just from Elisa.

At the bottom of a lake, the police find a car with a wax corpse in the trunk. It is 15-year-old boarding school student Alex, who has been missing for five years. With the sad certainty that she has been murdered, the case, which should have been closed, takes a completely new turn. Her teacher, the charismatic Hajo Rick, convicted of her murder on the basis of circumstantial evidence and witness statements, could be innocent after all! When the ambitious defence lawyer Sophia Dreyer obtains a retrial, the former investigator finds himself in trouble: Chief Inspector Kai Matzen now has to throw the certainties of the past overboard - and realize that he is more personally involved than he would like. Sophia also suspects that she can't trust anyone. And what if it was Hajo Rick after all? Dreyer and Matzen investigate independently of each other, each in their own interest, and reconstruct Alex's last hours. In the process, they uncover an intrigue.

Daniel is a singer who became famous overnight thanks to one song. But for the aspiring artist, the dream of fame was short-lived: his song turned out to be a one-hit wonder, and Daniel fell into a deep depression when his subsequent songs failed to connect with audiences. Daniel soon finds himself with few options left – he wants to end his life. However, his suicide attempt fails and he ends up in a secure psychiatric ward. He is allowed to leave on one condition: he must use his music to make a group of depressed people happy.

Sandra and Ulrike have to decide the fate of their mother, who falls into a coma due to a ruptured aneurysm and has to be connected to life support machines.