At -35°C and without shelter several dozen kilometers around, Mongolian drivers must face any challenge. Bataar'aa, whose 4x4 is falling apart, lights a fire under the engine to prevent it from freezing. In the absence of a road, he travels on icy rivers to supply the workers of the steppe. In the Gobi Desert, the tracks stretch for hundreds of kilometers. The country's economic "miracle" lies at the end of these: there lie the largest coal reserves in the world. For the drivers responsible for transporting “black gold”, the journey is endless. Baktu fights against the cold and the dust. His fear is to break down in the middle of the desert.