In the current case of "Krank", Harald Krassnitzer and Adele Neuhauser find themselves in the middle of a religious war between conventional medicine and alternative healing methods. When a little girl dies after using so-called gentle medicine, it causes a stir and a bitter, highly emotional argument ensues. Should she really have died, or could she have been saved with other treatment? Was her father, a well-known representative of alternative medicine and co-founder of the company "Medicina Lenia", guilty in the treatment of his daughter? A court case acquitted him of such allegations. But then he is murdered immediately after his acquittal.
The investigations of Moritz Eisner (Harald Krassnitzer) and Bibi Fellner (Adele Neuhauser) lead them to shaken family members, convinced prophets of salvation and unscrupulous machinations. The Viennese investigative duo finds itself in the middle of a religious war, which is not about religion in the original sense, but rather about something that is of existential importance for every human being: health. The fight between the representatives of so-called conventional medicine and the supporters of alternative healing methods is waged with almost fanatical severity - and in the end the most profitable of all sectors blurs all moral boundaries..