The movie is an actual Paranormal Activity spin-off, also familiar as the "cousin" of the series. The movie features Andrew Jacobs, Richard Cabral, Carlos Pratts and Gabrielle Walsh.
The film takes place in June 2012, in Oxanard, California. It begins with Jesse living through the Valedictorian speech at his high school graduation. Directly after the ceremony Jesse is outside with his family and friends, including Dad, Grandma, and best friend Hector. The graduation of Jesse is a pretty big deal because once they get home to their apartment the entire courtyard is filled with family and friends to celebrate the big event. One of Jesse’s best friends, Marisol, shows up late with salsa, and Jesse receives cash from his father as a graduation present. One of the topics of conversation is the apartment at the end of the courtyard that has newspapers taped to all of the windows, obscuring the view inside. Anna, an older woman, lives inside the apartment, and everyone talks about her and rumors that she is a “bruja”, or witch. There are also reports of hearing moans and wails coming from her apartment late at night.
The next morning we meet Jesse's friend, Hector, while he's at work. Jesse arrives to show off the new video cameras he has bought with the money from graduation. We quickly learn that Hector is the friend that Jesse can talk into doing anything when he is convinced to get inside a laundry basket equipped with Go-Pro camera and ride it down the concrete stairs of the apartment complex. Of course he crashes, scraping his knees and elbows along the way. While filming the injuries of Hector and other sights around the complex the boys see Oscar, the valedictorian from Jesse’s graduating class, come out of Anna’s apartment looking spooked and strange – he doesn’t talk to Jesse or Hector, but instead just quickly leaves the complex and runs down the street.
That night Hector is hanging out at Jesse’s house, and they get Grandma to do a couple of shots of tequila – While talking and hanging out with Grandma. they hear some screams and other strange sounds coming from Anna’s apartment, which it’s clear now is right below Jesse’s apartment. They go into one of the bedrooms and realize they can hear the sounds very clearly through a heating vent, and decide to lower the camera down the shaft to see if they can view what’s going on in that apartment through Anna’s vent below. They see a nude woman standing still inside the room. Then Anna appears, also nude and proceeds to paint a circle with a triangle inside it on the woman’s stomach with, what appears to be, blood. After grandma catches the boys and thinks they are watching porn, they boys look back to the monitor that is catching the action and see the faces of two young girls staring through the grate into the camera – they quickly pull the camera up to keep from getting caught and close the vent.
While playing with a “Simon” toy, the one with the four colored panels that blink in a series so the player can match the series, Jesse, Hector and Marisol notice a strange pattern that gives the appearance that the toy is actually answering Jesse’s questions – a red beep for “no” and a green beep for “yes” The next morning Jesse wakes up with blood on his sheets and a bite mark on his arm.
Jesse and Hector head to the playground to shoot some hoops, and afterward rummage through a backpack looking for change for the vending machine. Meanwhile a couple of thugs approach the boys and attempt to mug them for the backpack, kicking and beating on Jesse when he resists. Suddenly both of the thugs go are thrown by Jesse doesn’t know how he did it. Later, while consulting with the Simon toy, they learn that whatever it is that is answering questions with the toy also exacted the revenge on the thugs. The “super powers” do not stop with winning fights, when Jesse learns that he is unable to fall down – an unseen hand catches his body and rights him whenever he tries to fall backward, whether it’s from a standing position on the floor or on a chair. Jesse also finds that he can inflate an air mattress with one easy breath, even with Hector laying on it.
Jesse and Hector decide that they are going to torment the strange neighbor Anna, and talk a little kid into knocking on her door. They then set up some fireworks outside her window in an attempt to torment her further, but it doesn’t light – and suddenly Oscar the valedictorian comes leaping out of Anna’s window and runs away. They soon discover that Anna has been murdered, and that Oscar is the prime suspect. After the activity surrounding the murder and the crime scene ends, Jesse, Hector and Marisol break into Anna’s apartment to have a look around, and find several altars and other scary witch things around. The kids are suddenly confronted by Oscar’s brother Arturo, a tattooed gang banger, who states that Oscar is not responsible for the murders.
Feeling invincible, Jesse has Hector join him as he crashes a party going on at a house on the block. There he meets Penelope and takes her back to Anna’s empty apartment for a private place to have sex. When he has to go downstairs to get a condom Penelope starts hearing noises coming from under the floor, and finds a trap door. She opens it and someone tries to grab her from inside. She runs from the room screaming, and Oscar comes out of the hatch and walks into the bedroom. Jesse comes out and chases Oscar down, and Oscar shows him that he too has a bite mark on his arm, and he says that he’s been marked by Anna. He then runs off and while Jesse and Hector are looking for him he crashes into the roof of a nearby car, having hurled himself from a rooftop to his death. Jesse, Hector and Marisol check out the trap door basement and find plastic hanging all over the place, and another alter – this time with pictures of Oscar, Jesse, and Jesse’s family. Jesse’s mom is in one of the pictures, while pregnant with Jesse, standing next to Anna who it now appears used to be a family friend.
Jesse begins acting more and more strangely – sullen and moody, and while in the bathroom finds that he has black hairs in his eyes that he can pull out and throw in the sink. He then hears his little dog barking and follows the sound to Anna’s apartment and down inside the trap door in the floor. He goes down to investigate and encounters some little girls with black eyes, and some other ghostly figure. The next morning Hector visits Jesse, and Jesse is acting strange. He tells Hector that he isn't his best friend and to leave after embarassing him by turning the camera around on him. During a grocery store visit, Jesse sees a friend of Marisol's talking to her and he becomes angry and violent and pushes the man, as well as the shop owner. Jesse regrets his actions later, saying he couldn't control his anger.
Jesse, Hector, and Marisol visit Arturos house, where they check out Oscar's room. His room is filled with newspaper articles about the witch coven as well as children that have gone missing. Ali Rey's number is seen on one wall, and once Jesse gets nervous and leaves, Hector takes the number. Hector and Marisol contact Ali, and they meet up in a park. Ali has researched demons after the events of Paranormal Activity 2 and explains to them that the coven is trying to create possesed young men, who, once they turn 18 are chosen to finally be possesed. Jesse's grandma realizes what is happening once Jesse uses his powers to hold his dog up to the ceiling and laughing about it. Hector sees what's going on and gets Jesse to stop. They go to a shop where they talk to people to see what they should do. The grandmother starts doing a ritual, that only makes Jesse sicker. He breaks an egg used in the ritual that turns red, and the room starts to shake. Jesse disappears and reappars in the room and passes out on the floor, unaware of what just happened. The next morning Jesse awakes feeling ill. The grandmother sets up a bath for him. Jesse dissapears after the grandmother leaves the room, and Hector finds him outside, looking down and smiling at his grandmother who he pushed down the stairs. He disappears again and Hector calls an ambulance.
Hector and Marisol get in Hector’s car, planning to go to a house on a map provided by Ali as the place where the final ritual is to take. After some convincing from Marisol, they start driving to the house. The car dies in an alley and Jesse is seen in the distance, coming toward the car. He then disappears on the car room, then kicks in the window and pulls Hector out, choking him on the ground. Marisol hits Jesse with a blunt object and knocks him out.They put him in the car to take him to the hospital because he isn't breathing and his eyes were rolling in the back of his head. Before they get very far, however, a truck crashes into the car and temporarily knocks Hector and Marisol out, and the truck passengers take Jesse and drives off. Hector and Marisol go get Arturo and his friend Santo and head to the house of the ritual.
The four kids lurk around an abandoned house, recognizable as the same house that is in Paranormal Activity 3 – Grandma’s house where all of the witches were briefly seen. Santo sets to trying to pick the lock of the front door. While walking around, an improsioned woman is screaming for help. Suddenly women come rushing at Marisol, Hector and Arturo, and he quickly dispatches them with a shotgun, sending them flying. The three go back to the front door of the house and Santo is dead of multiple stab wound in front of the now open door. After they go inside, Hector, gets separated from the rest of them. Hector is seen running from room to room trying to get away from the women. He is calling for Marisol, but she doesn't anwer. Marisol’s body comes crashing down through a skylight.
Hector sees Jesse and starts running away. He ends up in a room where he finds a strange-looking door with markings. Jesse tries to convince Hector to let him in. But he doesn't buy it, and Jesse breaks open the door. Hector opens the door, causing the camera to glitch. He somehow opens a portal to where the event of the first Paranormal Activity occured. Katie can be seen walking down the stairs and into the kitchen to get a knife. Hector tries to get her attention for help, instead she starts screaming for Micah. Micah tries to attack Hector, but Katie kills him by stabbing him to death. Hector then flees into the living room, recognizable as the room where others have died in the series. Then, in a unexcepted twist, Hector turns around, and a now-completely possessed Jeese appears from nowhere unleashes a earsplitting demonic screech and knocks the camera to the floor. Hector is presumed dead. And after about 6 seconds of dead silence, a woman picks up the camera, and switches it off.
- Andrew Jacobs as Jesse
- Richard Cabral as Arturo
- Carlos Pratts as Oscar Hernandez
- Gabrielle Walsh as Marisol
- Jorge Diaz as Hector
- Catherine Toribio as Penelope
- Noemi Gonzales as Evette
- Gigi Feshold as Natalie
- Julian Works as Pablo
- Molly Ephraim as Ali Rey
- Chloe Csengery as Young Katie
- Jessica Tyler Brown as Young Kristi
- Katie Featherson as Adult Katie
- Micah Sloat as Micah (cameo)
Filming was finished in late July, when producer Jason Blum confirmed that it was almost finished shooting. This resulted in the film getting pushed from its original release from October 25, 2013, to January 3, 2014. This was also due to the larger cast and larger/longer production than the other films.
Paranormal Activity: The Marked ones was announced in April 2012 and was teased in Paranormal Activity 4. Paramount screened a short clip after the Paranormal Activity 4's ending credits finished, that showed two friends looking around a Mexican store, who are scared by an old lady talking spanish. The scene was only shown in theaters.
On 17th of October, the official Paranormal Activity YouTube channel uploaded the official Paranormal Activity: The Marked Ones trailer, gaining more then 5,3 million views. In November, the official website redesigned and posted two motion posters titled as The Mirror Kid and The Statue Poster. Another official teaser poster was also released that month.