Nela Langenbeck is a commissioner with the Hamburg police and not only fights against crime, but also against the misogynist structures of the police apparatus of the 1990s. She and her colleagues are not really taken seriously and are often treated more like secretaries. You can make coffee and sort files. Langenbeck is investigating the case of the acid barrel murderer Raik Doormann, who absolutely needs to be under lock and key because she is the only one who takes an escaped victim seriously. Doorman abducts, tortures and kills women in his own nuclear bunker and throws body parts into acid barrels. His goal is to extort money to make his dream of living in Costa Rica possible. The commissioner gets on the trail of the woman killer and uncovers incredibly brutal machinations that keep the whole country in suspense....