A group of early humans has been lured to the eastern extremes of the North American continent 15,000 years ago. As they settle in their new home, the demands of the once benevolent spirit become more ominous. Too late, their shaman realizes its true nature. The clan is scattered and most are killed when the group tries to resist the demon's will. In the present day, a young engineer and outdoorsman, David Locke, who has spent much of his youth at a family cabin in the Green Mountains of Vermont is familiar with local tribal lore because of his long acquaintance with an old man of Native...