Not long after John Chambers and his family arrive at their new home in a small country town of Pennsylvania, John begins to experience sleep paralysis. Lying there paralyzed, trapped within his own nightmare, other-worldly beings visit John. They are entities which exist in the darkest shadows of the night and can only be seen out of the corner of one's eye. These encounters begin to haunt John, transforming to complete terror as he discovers the entities' sole purpose... the abduction of his seven year old son, Nathan.