When his mother commits suicide, Tom Redding discovers he has a long lost sister that cannot move or talk. Together they travel to their dead mother's isolated home, where Tom hopes to document her illness only to be driven to the brink of madness by a supernatural evil. 当他的母亲自杀,Tom Redding发现他有一个失散多年的妹妹,无法移动或说话。他们一起旅行到他们死去的母亲的孤立的家,在那里汤姆希望记录她的病只由一个超自然的邪恶驱赶到了疯狂的边缘。