Is being best friends enough to saveawhole town? Polly and Buster have always believed that witches and monsters can be friends, but it seems no-one else agrees. With the witches furious and the monsters in uproar, their whole town is heading for a war ... and yet no-one realises that a much greater menace lurks nearby. Can Polly and Buster bring everyone together in time to save their town from the biggest danger of all?