On Halloween day, when Mary Armstorng gets the serial killer's sword, he realizes that her classmate Aurora Shivers and her boyfriend Josh Stalhbaum were killed by the vampire killer, who is actually her former friend Wendy van Hauntley and her father Vexius van Hauntley. Mary helps her classmates, her police officer Elder Brother and her teacher, who is a vampire hunter in high school, to escape from the hands of evil vampires who are the vampire killers, on Halloween day.
