A middle school girl moves to a small town and discovers that her great-great-great-grandmother was executed there for witchcraft. After she finds a message addressed to her in a century-old book, she realizes that she and her two new friends must stop a deadly catastrophe predicted by a 19th-century witch. But as their adventure takes them through historic cemeteries, rural libraries, and high-octane scholastic bowl tournaments, something sinister is lurking, watching, and waiting.