Lacey suffers from nightmares, and has a particularly frightening dream where she is dragged, tied to a bed and almost stabbed by an unseen entity. Her husband, Jake, takes her to a psychiatrist to help her confront her fears, and decides to go visit the house she grew up in. They arrive not knowing who is actually living there and meet two teenage girls and their younger brother. Their parents, the homeowners, have apparently just placed the home for sale and then gone out of town. The daughter thinks Lacey and Jake have been sent by the real estate company to view the house. Jake and Lacey pretend they want to buy the house so they can look around. At the house, Lacey sees a reflection of her mother's deceased boyfriend coming towards her in a mirror inside the bedroom where he died, and smashes the mirror in a panic with a chair. Her husband takes the broken mirror with him in an attempt to repair it, but a piece is left behind which later glows red. Shortly after, the teenage girls and their brother are all violently killed by an unseen force; the vengeful spirit of the deceased lover has been released from the mirror.