"It's fright lights, big city when the Monster High ghouls head to Boo York. Cleo de Nile is invited to attend a fancy gala celebrating the return of a magical comet and, of course, she brings along her beast friends. But their trip isn't all fun and frightseeing because Nefera, Cleo's sister, uses the comet's powers for her own spooktacularly sneaky plans. Can the monsters unwrap the mystery of the comet in time to stop Nefera? Find out in Monster...

"Best ghouldfriends Draculaura, Frankie Stein, Clawdeen Wolf, Cleo De Nile, and Lagoona Blue always have one another's backs. When a villainous zombie makes a lot of trouble at Monster High, these ghoulfriends band together and respond the only way they know how--with ghoul power!"--Back cover.