A girl named Lilly (Bailee Madison) is given her very own life-sized "Really You" doll which is named Lilly D.; because she is good at manipulating her dad. Lilly remains a spoiled brat, bragging about Lilly D, even going as far as ripping the leg off a friends doll, after the friend informs Lilly that "Lilly D hates Lilly". Soon after, strange events begin to occur which Lilly's mother accuses Lilly of doing; despite how Lilly maintains she is innocent, and that Lilly D is alive.
Alex has to stay home from school, thanks to a bad cold – and soon finds that he's not alone in the house. To make matters worse, two morning news show anchors begin talking to him from the television, warning him that his mom and the government are out to kill him for being ill (along with the monster in the house that may have sickened the boy to start with). Is Alex really in danger or is this all a fever dream?
As part of a joke, Naomi (Julia Sarah Stone) and Tracey (Laine MacNeil) try to scare Naomi's sister Carla (Joey King) by summoning the spirit of an evil man named Cyrus Clayton (Ian Gregson), a sawmill worker who was fired for drinking on the job and killed his boss before he lost his leg. But the joke's on them when Carla goes missing and the spirit is let loose in the house.
A snooty homecoming queen named Kate (Madison Desjarlias), a jock named Halftime (Casey Dubois), and a Goth girl named Audrey (Madeline Carroll) are stuck in detention for unknown reasons. But when Kate goes missing and strange noises begin haunting them, Audrey and Halftime soon realize that their after-school punishment is from a higher power who wants them to atone for a homecoming court scandal.
On their way to a party, three teenagers (a gamer named Nicholas, a goth named Erica, and a brainy girl named Margaret) find themselves in an unfamiliar part of the forest known as Lovecraft's Woods, said to trap its victims into an endless time loop and be haunted by a ghoul who infects anyone it scratches.
Bullied by her peers, tired of her parents and bugged by her little brother, goth girl Cassie decides to get some harmless revenge by reading a scary book to her brother - summoning a monster in the process.