Be careful with them. They're out for blood.
Greer MacDonald has just received an invitation to a weekend retreat hosted by the most admired circle of friends at her new boarding school, the Medievals.
It's an invitation that everyone in school wants desperately, and rumor has it that the student who most impresses the group will be given the privilege of becoming a Medieval themselves.
When Greer arrives at the estate where the retreat is being held, she's immediately taken in by the luxurious trappings -- the chauffeured cars, multicourse dinners, and outfits perfectly laid out on her bed each night. But as her time away begins to take shape, the truth becomes impossible to ignore: this weekend that seemed so perfect? It's actually deadly.