Recently widowed, plagued with insomnia, Jeff Hanks is a man teetering on the brink.

The sleepy community of Raven, nestled comfortably on Bodmin Moor, Cornwall, is subjected to a terrifying storm that awakens a slumbering malignant nightmare.

Jeff Hanks seeks out the welcoming tranquility of Raven, hoping it will ease his grieving mind, but what he discovers is a town slowly being ravaged by an unspeakable evil. Slaughtered animals litter the moors; peculiar hairless creature are seen on CCTV, and something dark, ancient and abhorrent lurks inside the old mausoleum on top of Raven...