The climate catastrophe has a tight grip on Franconia, and the first hurricane in Mediterranean history is sweeping over the Alps. In the wake of these stormy events, more and more people of Upper Franconian origin are dying from a mysterious illness. At the same time, seemingly unrelated, five retirees are murdered in a nursing home in Bamberg. The Bamberg police, led by Commissioner Haderlein and his colleague Lagerfeld, uncover mysterious and increasingly shocking connections.