Magic clashes with reality when scientist Rosalyn Adams analyzes an antique witch's artifact being prepared for an museum's occult exhibition. Unlocked, the artifact unleashes a necromantic entity capable of warping the very fabric of reality. Harvesting victims, each kill strengthens the entity's corporeal form. Racing to stop the entity, Rosalyn tracks down the artifact's origins, tracing it back to the small town of Blackroot, and resurrects the horrific tale of a demonic witchfinder.