Young "hacktivist" twin sisters Anna and Benni are inseparable in their quest to expose environmental wrongdoing by any means necessary. But when their hack into a government server leads to a police raid, Anna is captured and Benni disappears into the underground. When it becomes apparent Benni is lending her skills to a radical new terrorist group that does not shy away from violent action against state and corporations, the sisters suddenly find themselves on opposite sides of the question: What line are you willing to cross for something you believe in?
Blum, the owner of a funeral home in a renowned ski resort and a loving mother of two young children who is shaken to her core after the accidental death of her husband. She soon realizes that he was murdered because he was about to uncover terrible secrets. She sets out on a vendetta, but in the process turns herself from the hunter to the hunted.
The show is based on the best-selling novel Der Nasse Fisch (The Wet Fish) by German writer Volker Kutscher, the first of his Gereon Rath novels. Set in 1920s Berlin, they follow police detective Rath, who is transferred to Berlin and tries to solve crimes in a city torn by social and political upheaval in the years leading up to Adolf Hitler's rise to power.