It is the summer solstice, but in a faded Scottish cabin park the rain is unrelenting. Twelve people on holiday with their families look on as the skies remain resolutely grey. A woman goes running up the Ben as if fleeing; a teenage boy chances the dark waters of the loch in his kayak; a retired couple head out despite the downpour, driving too fast on the familiar bends.
But there are newcomers too, and one particular family, a mother and daughter with the wrong clothes and the wrong manners, start to draw the attention of the others. Who are they? Where are they from? Should they be here at all? As darkness finally falls, something is unravelling . . .