It's 1666, and the forces of darkness are spreading across a Europe already ravaged by war and dynastic rivalries. Dreaming of wielding a blade in epic battles like the father he never knew, 16-year-old Jakob von Drachenfels falsifies a letter of introduction and joins the Hexenjger - an elite Catholic military order of witch hunters. But he soon learns a lesson in the dangers of ambition when he finds himself selected as part of a team sent to recover a biblical relic from a witch-infested castle.

Betrayed from within, rival military units converge on Jakob's company, and what was already a difficult mission turns into a desperate struggle for survival.