16-year-old Brin Skar hates everything to do with the supernatural, so the obsessive film geek isn't happy when she discovers that her junior year Film class at Grisly High is devoted to the horror genre. She's even more disconcerted when she learns that six groups in the class will be writing and directing their very own horror movies. Brin and five classmates travel to Bodie Ghost Town in California to shoot their creepy film, but they soon find themselves fighting a real terrifying threat when a clan of mean, bloodthirsty vampires emerge from beneath the surface and start attacking the group. The teens, headed by Brin and the egotistical director Anaya Frost, have no help from the outside and become outnumbered by the vampires a hundred to one. But when Brin meets Paul, a helpful and smoldering vampire outcast who's had enough of his shameful life, she realizes he might be the only key to her survival.

Brin Skar has had a rough couple of weeks. She barely survived the grisly vampire attack in Bodie Ghost Town, the mysterious Paul is now a guest in her own home, and her dad Kristopher, dead for over a year, has emerged from the grave to try to kill his only daughter. After two somber funerals and the baffling disappearance of her Film teacher, Brin decides she needs a break from all the pain and heartache. And what’s a better escape than a round of golf at the brand new Macabre Golf Course? But as soon as Brin and her friends hit the links, strange noises and bizarre sightings begin to occur. And unfortunately for the group, the vampire encounter is going to seem like child’s play… especially when the zombies come out to play!

Do you like ghosts? Or witches? Or aliens? Or werewolves? They're all here... just in time... for the Monster Apocalypse! Brin Skar thought she defeated the vampires, and she thought she escaped the zombies, but as it turns out... the horrors have just begun. When Brin learns that Droz has kidnapped Paul, as well as her own mother, she decides her only choice is to return to Bodie Ghost Town. Joined by Ash, Anaya, Mr. Barker, and others, she sets out to destroy the evil clan leader... in the grisliest showdown of all. Here it is... the final epic chapter of the Grisly High trilogy!