Victor Thompson loses his sight and then loses his wife to cancer. Recovering from a psychotic episode, he moves his two young daughters into a rural part of Pennsylvania that was once known as Witch's Hammer. A Coven of Satanic Satan Worshipers kidnap his daughters and force a Demon to first possess Victor, then in an elaborate ritual, possess one of his daughters.
After inheriting hundreds of acres of land from their estranged grandfather, siblings Shannon and Billy invite some friends to go for a long overdue hunting trip to check things out. They quickly discover that the lands are currently inhabited by a bloodthirsty creature resembling a Bigfoot.