All books are magic, but some are more magical than others. When Susan opens a strange library book, she discovers it is about her and her friends, leading up to the moment when she opened the book. Beyond that, the pages are blank . . . waiting for the children to wish the book full of adventures. Fredericka asks for wizards and beasties, and a dragon carries her off. Susan journeys to the world of Half Magic, and finds that mixing magic creates trouble--far too much to deal with before the book is due back at the library. Will their adventure end happily ever after?