Fifteen-year-old Morwenna is on the run from a mother devoted to dark magic, from state care, and from the memory of her twin sister's death. However, the worst part is that she has to leave her home, the enchanting Wales, and with it her only friends, the fairies and ghosts that reside in the forests there. Her father, whom she has never known, does not want to take her in and sends her to a girls' boarding school, where she must cope with the teachers' lack of understanding and the excessive ambition of the other students. Desperate, she turns to the magic that has accompanied her since childhood, a magic that no one but her can see. And to her books. In science fiction and fantasy novels, she finds more than just fleeting comfort: they open doors to other worlds.