Kaz is a ghost. He and his family live in a dilapidated schoolhouse. But when that schoolhouse is demolished, his family is blown into the outside, where they get separated. Kaz finds himself blown into a library - with a girl who can see him! Even before he arrives, however, visitors to the library insist the library is haunted. Together, Kaz and his new friend Claire solve the mystery of who is causing strange things to happen in the library.