Kit, a troubled girl, is sent to the exclusive Blackwood boarding school, where she discovers that only four other female students have been admitted to learn the four pillars of knowledge under the ominous wing of the mysterious headmistress Madame Duret.

Kit, a troubled girl, is sent to the exclusive Blackwood boarding school, where she discovers that only four other female students have been admitted to learn the four pillars of knowledge under the ominous wing of the mysterious headmistress Madame Duret.