Emma Morris, the proprietor of Wishing House, accepts the commission of a desperate sister. To protect the young, helpless sister of her client, Emma takes the identity, masquerades as her client, and goes to Ron Lake High School. As Emma starts her work, the young, isolated witch discovers that, unlike the book said, teens' world is not only fresh and fancy but also complicated. While she's doing her best to meet the requirements of her client, she discovers a shocking secret buried in Ron Lake.