What could happen, in this ascendant vehicle, in the snowy whiteness, without perspective and devoid of sight? The passengers traverse the cold to the last sanatorium up in the mountains. During the journey, an unexpected event halts the train. Noises of uncertain origin, unexplained phenomena, creatures’ tracks, hypothermia and its imminent threat, of dilated pupils, of inaudible heartbeats, the anteroom to unconsciousness ...