In an antique-filled mansion, sisters Claire and Sophie find a ladder to the magical land of Arden, where wraiths roam freely, unicorns have disappeared, and the guilds of magic no longer trust each other.

"Claire Martinson and her sister Sophie have decided to stay in Arden--the magical land they discovered by climbing up a chimney in their great-aunt's manor. If what they've learned is true, the sisters are the last descendants of the royal family, and only a true heir of Arden--with magic in her blookd--can awaken the unicorns. Since Sophie does not have magic, the land's last hope rests on Claire. The sisters journey to Stonehaven, a famed Gemmer...