The members of Mystery, Inc. have just gotten jobs as student teachers at DeSoto Central Middle School in DeSoto County, Mississippi. So has Olivia Holt who has lived in this county for most of her life. And it seems like the literature workshop class of Ms. White which Olivia is serving as student teacher to is haunted by a school witch. As a result, the school is closed. Mystery, Inc. decides to investigate. Could the upcoming spelling bee have something to do with it?