For avid student Olivia Murdoch, life on the Estilorian plane is filled with wondrous adventure. Every lesson about her new existence is both exciting and challenging. Along with her sisters, she embraces this non-human half of herself.Helping with her lessons is her Gloresti, James. Teacher, scholar and distractingly attractive, James takes on his roles of Olivia's guide and protector with equal dedication. As he learns the human emotions that Estilorians no longer experience, he starts to see Olivia as much more than just an assigned pairing.The physically weakest of her sisters, Olivia trains hard to learn things that no typical human classroom can impart. When they travel to "Central," the Estilorian base, she comes to understand why she must become strong enough to defend herself. She and her sisters are targets.Not all Estilorians welcome them. In fact, more than one would see them dead.