On Christmas Eve a snowstorm rages and a train gets stuck in the impossible snow that won't let up. A group of disoriented travelers, somewhat unwisely, abandon their stranded train and stumble upon a deserted house. The house, standing as though waiting for the travellers, feels slightly sinister. Cut off in the snow, with no way of making contact with anyone, the group have to make the best of things – while feeling more than a little uncomfortable about making themselves at home.