Four old high school friends, one long-overdue reunion, and eleven dead bodies . . . Jolene, Melissa, Carly, and Jason haven't gotten together in over twenty years, so when the opportunity arises for the gang to reunite, they gather their respective partners and support animals and head to the adults-only Mystic Valley Camp for a long weekend of boozing and bonding. When a series of hazards forces them off the grid, things start to get bloody, and the group realizes that someone out there has got some dark plans for their suddenly brutal vacation.
Izaak, Cory and Scotty have been going to the same summer camp each summer for nearly ten years now, but last summer things changed as they welcomed new people in their friend group.