Step Fletcher, his pregnant wife DeAnne, and their three children move to Steuben, North Carolina, with high hopes. But Step's new job with a software company turns out to be a snake pit, and 8-year-old Stevie's school is worse. As Stevie retreats into himself, focusing more and more on a mysterious computer game and a growing troop of imaginary friends, the Fletchers' concern turns to terror. Young boys, whose names match a list of Stevie's nonexistent friends, have mysteriously vanished from Steuben. And as evil strikes out from the most trusted corners, it's suddenly clear that Stevie is next on the list.