Paranormal Activity: The Ghost Dimension

The film begins in 1988 by showing the last scene in Paranormal Activity 3, during which young Katie and Kristi watch as their mom's boyfriend, Dennis's spine is crushed by a mysterious force. Grandma Lois takes the girls away to a man who speaks to the girls about "Tobi," and how they are important to Tobi's plan.
The film continues in 2013, when Ryan Fleege, his wife, Emily, and their six-year-old daughter, Leila, are about to celebrate Christmas, and Ryan's brother, Mike, comes to stay with them after breaking up with his girlfriend in Chicago. Ryan and Emily's friend, Skylar, notices that Leila is talking to an imaginary friend named Tobi. Mike finds a box of old video tapes, dating from 1988 to 1992, and a large video camera. The tapes show a young Kristi and Katie living with their mother, Julie, and boyfriend, Dennis, in 1988, while other videos from 1992 record activities in Lois' house, where the girls practice supernatural abilities with the mysterious man. Ryan and Mike notice that in some of the videos, the girls are somehow aware of the Fleeges and their home in 2013.
Ryan notices the old camera picks up spiritual beings. He decides to record continuously in the house and captures a number of paranormal events. after continuing to watch the old tapes, Ryan and Emily discover that their house is built on the same property that Katie and Kristi used to live in before the girls' house burned down in 1992. The Fleeges also realize that the grown-up Katie, masquerading as a real estate agent, sold them the house, which was built by a coven of witches called The Midwives.
Ryan and Emily call a priest named Father Todd, whom Leila attacks. Ryan researches the cult, and realizes the coven killed a family in Nevada, related to a boy named Hunter (in Paranormal Activity 4), who was born on June 6, 2005 (the sixth day of the sixth month in the sixth year of the new century), the same day as Leila. One of the tapes also shows Hunter in 1992, despite the fact that he had not been born until 2005. Leila's blood is needed to finish Tobi's transformation into a physical being. One night, Leila opens a doorway to another time and location. Ryan and Emily flee with her to a hotel.
Father Todd attempts to cleanse the house but is dragged away by Tobi. Ryan traps the demon in a white sheet and finishes the prayer. Leila returns to normal. However, Skylar vomits blood all over Mike and the blood burns him, killing them both. Ryan is impaled by the demon while running away with Emily. Leila sprints into the "portal" in her room with Emily following; she arrives at Kristi and Katie's mother's house in 1992, where she finds a young Katie, and confronts the "human" version of Tobi. Emily is killed and Leila and "Tobi" walk off as the camera cuts.
In an alternate ending, the extermination of the demon was successful. Four months later, Emily, Ryan, and Leila have moved into a new house. While Leila is playing outside, she is seen hand-in-hand with young Katie and Kristi. While celebrating Leila’s birthday party, Emily is revealed to be pregnant. Leila blows out the candles on her cake, wishing for a baby brother. Emily states they do not know the sex of their baby yet, and the film ends.