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. 　　译文(2): 六个被创伤经历捆绑在一起的人决定以一种时尚的方式结束一年的集体治疗。他们又一次相聚在一起，在上世纪70年代的一个假日租赁苏格兰低地上度过了一个团聚的周末。很快，一系列神秘而可怕的事件开始暴露出他们关系中的裂痕，他们一个接一个地发现，信任只是表面上的。一夜的结束远比他们预想的要来得彻底。