En route to a wilderness camping retreat, a family's car inexplicably breaks down in New Jersey's legendary Pine Barrens region. As darkness falls, panic sets in. Then, the marooned family stumbles upon an ancient and seemingly abandoned house. It is here that they meet the bizarre Mrs. Leeds who lives there with her equally unhinged children. Offering no assistance, she warns of a violent, unseen force lurking in the forbidding countryside. Soon, the family will encounter a supernatural evil older than the woods themselves.