Hilo's favorite warrior-cat-friend, Polly's adventures with Hilo have landed her in trouble! So when Polly breaks one too many rules, she gets sent to Wombatton--the magical boarding school for bad kids. But something strange is going on at Wombatton--why does everyone pick on Polly's roommate? And why have students started disappearing? Can Polly get to the bottom of this magical mystery and reunite with Hilo and her friends on Earth?!