It was once the source of life, light and warmth. But now the sun has turned the entire world into a baked and barren wasteland. In order to survive, people must protect themselves against the sun’s scorching light. Marie, her little sister Leonie and Phillip head for the mountains in a car with covered windows. Rumour has it there is still water there. Along the way they run into Tom, a first-rate mechanic, who becomes indispensible. But can they trust him? Tension grows in the small group. As if things were not bad enough, they are lured into an ambush. Their real battle for survival begins.