A teenage boy who has just moved into an old house learns that it may be haunted while falling for a pretty neighbor and attempting to contact the spirits by means of a mysterious box that allows the living to communicate with the dead. It's winter, and Evan (Harrison Gilbertson) has moved into a home with a dark history when he meets Samantha (Liana Liberato), the mysterious girl who lives nearby, and claims that the house is cursed. Later, as the pair delve ever deeper into the supernatural mystery, it begins to appear that sinister forces are stirring in the darkened attic. When an enigmatic device appears to open a gateway to the afterlife, allowing sinister spirits to cross into the living realm, Evan and Samantha seek out the last living member of the home's original occupants (Jacki Weaver) in an attempt to close the portal they should have never opened.