After learning that their younger sibling escaped an earlier kidnapping attempt that also killed their parents, two estranged sisters must join forces to rescue her from a group of bloodthirsty vampires.
Six people bound together by a traumatic experience decide to round off a year of group therapy in style. They join each other once more, traveling up to the Scottish Lowlands for a reunion weekend in a 1970s holiday let. Soon a number of mysterious and horrifying events start to expose the cracks in their relationships, and one by one they discover that trust runs but skin-deep. A night of closure turns out to be far more final than they could have anticipated.