Yvain, Princess of the Fallen, is the only person who can break the curse of the Fallen. Placed on her ancestors long ago the Fallen are bound to their human form. The Pures hunt the Fallen but due to a deal they can only kill a Fallen during their eighteen year and as long as they stay within the city walls they are safe. No female Fallen has ever lived past her eighteenth birthday. They are the only ones not safe within the city and the Pures are searching for Yvain. Once Yvain thought her life was simple but not only is she the only heir to the kingdom and thus must live to lead her people but also survive the Pures to free her people.