Claire Martinson and her sister Sophie are fighting to save Arden, the magical land they discovered by climbing up a chimney in their late aunt's house. They are the last descendants of Prince Martin of Arden, and only a prince or princess – with magic in their blood – can awaken the lost unicorns. As Claire struggles with her magical training, Sophie uncovers dangerous truths about the people they thought were their friends. Will Claire be able to prove she is the heir who was prophesied...
Claire Martinson still worries about her older sister, Sophie, who battled a mysterious illness last year. But things are back to normal as they move into Windemere Manor... until the sisters climb a strange ladder in a fireplace and enter the magical land of Arden. There, they find a world in turmoil. The four guilds of magic no longer trust each other. The beloved unicorns have disappeared, and terrible wraiths roam freely. Scared, the girls return home. But when Sophie vanishes in the night,...