Killer High: Ghouls Rule unearths a classic battle between"Normies" and critters - and things are going to acquire scary! For years, students at Monster High were cautioned that Halloween was a night to stay inside and avoid conflict at all costs. But Frankie and her friends discover that ghouls and also"Normies" once loved to spend the holiday together! The ghouls choose to turn the clock back and use the night to celebrate their identity and show it is okay to"Make . Be Unique. Make a Killer!"