Ten-year-old Livy, who lives in Massachusetts, hasn’t visited her Gran Nicholas’s house in Australia for five years. When she returns for a visit, Livy is struck by the feeling that something very important is waiting for her. Sure enough, a peek inside her closet reveals “a small zombie wearing a chicken suit,” perched atop a dictionary. “You’re back. Took you long enough,” the creature says to the girl. Once upon a time, it seems, five-year-old Livy discovered this strange being, who goes by the comically understated name of Bob, and the two formed a secret bond. Picking up where they left off, Livy keeps Bob hidden while they hunt for clues about what he is, where he came from, and how to get him home.