Kit (AnnaSophia Robb), a difficult young girl, is sent to the mysterious Blackwood Boarding School when her heated temper becomes too much for her mother to handle. Once she arrives at Blackwood, Kit encounters eccentric headmistress Madame Duret (Uma Thurman) and meets the school's only other students, four young women also headed down a troubled path. While exploring the labyrinthine corridors of the school, Kit and her classmates discover that Blackwood Manor hides an age-old secret rooted in the paranormal.