A boy who sees the impossible. A girl cursed to be a beast. Renwick and Brynn have contented themselves with the futures others have decided for them, but when an ancient evil awakens, their lives are all irrevocably changed. They must embark on a journey, outwit powerful enemies, and gamble their fates on ghosts of the past, all in the hopes of freeing their families from the grasp of one that seeks to rule over them all: The Briar Queen.