When two young lovers crash their car into a ravine in the remote mountains of Wales, they are plunged into a lost world. Dragged from the river by a mysterious figure, they are taken to a ramshackle farm, a place untouched by time. As events unfold we learn the explosive truth about the young couple's past. More unsettling still, we discover the ghostly truth about Stanley, and the tragedy of the valley he once called home.

警方调查时在湖中发现一具女尸，死者身份明确，尸体上的手镯却与另一案中的失踪女孩所带手镯款式相同。死者身亡当晚，案发地还有一名可疑男子出现。扑朔迷离的案情背后究竟隐藏着什么秘密？