It has big city when the Monster High ghouls head, fright lights! Cleo denile is invited to attend a gancy gala celebrating the recurrence of their magic comet and, naturally, she brings along her monster friends. But their trip isn't all pleasure and frightseeing because Nefera uses the comet's power on her spooktacularly sneaky plans. Can the monsters unwrap the mystery of their comet punctually to avoid Nefera? Figure out Boo York, the first-ever Monster High musical, including eight songs.