When eighteen-year-old Ari Johnson is transported from her bedroom to the cold kingdom of Mount Kaf, where terrible and fickle genies live, she discovers a truth that turns her whole world upside down. And suddenly her worries about college and her problems with her friendship with Charlie seem trivial compared to the war she finds herself in. It is not easier because of the ardent guard Jay, who pursues her everywhere, and whose loyalty Ari does not want to doubt, but must. She doesn't know who to trust. The truth is burning through her life, trying to turn her into ashes. Ari will have to contend with ancient, dangerous creatures, family problems, and heartbreaking romantic relationships.