Centuries ago John D'Ampton slayed a giant snake-like demon that was menacing a small town in England. It's now present day and a local archaeologist Angus Flint excavates a skull that was part of the worm. The skull is excavated on the property of James D'Ampton, a descendent of John D'Ampton. The property is home to two orphaned girls named Mary and Eve Trent, whose parents disappeared without a trace. Sylvia plans on using the skull, along with a virgin sacrifice, to free the creature from its imprisonment. When Eve disappears, James, Mary, and Angus must find her before she sacrifices Eve.