Set in August 2006, the film focuses on Kristi Rey, the sister of Katie (from the first film), her husband Daniel, and their infant son Hunter. After what they believe is a break-in, the family installs a series of security cameras throughout their home to monitor activity.

As strange occurrences escalate — doors slamming, objects moving, and unexplained noises — the family begins to realize a malevolent force is targeting them. The nanny suspects it’s a demonic presence, but the family is initially skeptical.

Eventually, it becomes clear that the entity is interested in Hunter, and that it may be connected to a demonic pact made generations ago. Kristi becomes possessed, and the family is forced to perform a ritual to transfer the demon to someone else — Katie, which ties directly into the events of the first film.