In 1625, the Franconian village of Eisbach has been plagued by disease, famine, heinous crimes, and a merciless winter. Katarin Jaspers is the maidservant to the enigmatic Reverend Zacharias Engel, appointed by Rome to cure the village of suspected diabolism and save every God-fearing soul.

Zacharias soon finds his first witch, and the public burning of a local man could spell the end of misfortune. As a sense of peace settles over the village, Katarin finds herself increasingly infatuated with Zacharias, who is a disruption to her predictable existence and a balm for her cruel past. But peace for Katarin is short-lived. Margaretha Katz--the new midwife--is seen as a rival for the reverend's attention. Fear and recrimination reach a fever pitch when a great tragedy sets the town fully on edge.

With the walls of winter closing in around Eisbach once again, rumours flourish and villagers turn on each other. Now, no one is safe from the pyre.