Within the medieval Bavarian city of Ravenberg, an evil grows; born from the dark secrets of ancient alchemy. Within the city walls, Michel Friedmann, a trained and trusted physician and leecher has been conscripted into the duty of examination, accounting, and quarantining of those afflicted by a new outbreak of the deadly plague. His troubles are compounded when he discovers an evil presence that has been using the cover of the sickness to prey...