On Halloween, a group of friends encounter an extreme haunted house that promises to feed on their darkest fears. The night turns deadly as they come to the horrifying realisation that some nightmares are real.

A family, trying to pull themselves together after losing their infant son, moves into a new home, where, almost immediately, the mother begins experiencing paranormal phenomena. She finds it playful at first, but as it grows increasingly malevolent, she is unable to convince her husband of it, and she must contend with it to protect her family from its influence.