Katie is possessed by a demon, kills her sister Kristi, and runs away with Kristi’s son Hunter. The story then jumps ahead five years later and focuses on siblings Alice and Wyatt, Alice’s boyfriend Ben, and a frightening little boy across the street named Robbie. Alice and Ben decide to use laptop computers to document the frightening supernatural occurrences that happen when Robbie is around Alice’s house. Robbie seems especially interested in Alice’s brother Wyatt, and wants what he and Wyatt do to be kept secret from Alice. Alice’s parents are too detached to notice the evil emerging around them.
