Cleo De Nile is so excited to visit Boo York that she's practically bursting out of her bandages! She's bringing her sweetie, Deuce Gorgon, and her beast ghoulfriends, plus a new fiend, pop sensation Catty Noir. The ghouls expect to have the times of their unlives partying at a gala celebrating an ancient Egyptian artifact, the comet crystal. Cleo doesn't know it, but her sister Nefera, is planning to trick her into making a scared promise under the light of the comet when it passes over Boo York - a promise that will change her destiny forever! And no one knows that the comet is on a collision course with the Boo World, hurtling directly toward Boo York! It's a fangtastic, claw-biting adventure that no one will ever forget...as long as they survive the night of the comet!