In the sleepy town of Northam, Massachusetts, not everyone is who they seem to be.
Take Scott Whitney, for example. A struggling high school senior, Scott wants nothing more than to have his much-divided, social-climbing family believe him when he comes to them with something important, no matter how often he disregards their rules.
One night, Scott catches his father’s beautiful colleague, Maria, drinking his father’s blood in their office parking lot. When his father has no recollection of this event, and gets weaker the more he spends time with Maria, Scott turns to his mother and sister for help. When he realizes that Maria has captured their hearts and minds, as well, Scott has to find a way to believe in himself, and become more than anyone thought he was capable of, in order to stop her. But what will it cost him?