Kylie Winters, a bullied and self-loathing teen, reluctantly agrees to babysit at an isolated country mansion on Halloween night. When a small boy in a pig mask appears at the door trick-or-treating, Kylie's night transforms into a horrifying and violent cat-and-mouse game. She must go beyond what she ever thought possible if she and the children are to survive the night.

Janey is sent to a silent meditation retreat, in the woods, for rehabilitation, only to realize that the men who run it are brainwashing women, and if she breaks the rules, she'll discover what lurks beyond the trees.