A life-threatening accident reveals that Finn is a werewolf; the next morning, he receives an invitation to a secluded high school. Finn quickly realizes that the school is in fact an academy for monsters and is far more perilous and full of adventure than he ever expected. But Haunted High has had a dangerous history with werewolves. Can Finn survive monster politics, life-threatening pranks, and teachers more likely to kill him than help him in time to answer the real question: Who is the girl haunting the cemetery and why does he sleepwalk to her grave each night?