On an isolated farm deep in the New Hampshire woods, Brian Davidson spends his days caring for his brother Bo, who suffers from a childhood head injury, and their ailing mom. Together, the brothers have managed to live a peaceful life, but the shadows around their home have begun to shift.

Dead bodies start turning up horrifically twisted, covered in carved symbols, mouths agape in frozen screams. As the disturbing events creep closer to home, Brian begins to sense that his family's past might hold the key to this hideous mystery.

The bonds of family are brutally tested as darkness closes in, and some secrets refuse to stay buried.