The fall of a large meteorite onto US territory in the area of Yellowstone National Park provoked the explosion of an ancient, long-extinct supervolcano. As a result of this catastrophe, the effect of “Volcanic Winter” occurred on Earth. A small group of people is fighting for survival. Survival... survival at any cost is the main task! And this means searching and fighting for the remnants of the resources of a once mighty civilization. True, it is very difficult to get them - every little thing you need is covered with a many-meter layer of snow, and there are plenty of hunters for it. What could be worse than an eternal winter with frosts of one hundred degrees? It turned out that maybe it was rapid warming. The Earth's climate has begun to recover after a terrible disaster. The rapid melting of snow and ice that had accumulated over six years of cooling began. The only way to survive is to move closer to the tropical zone, where the snow has already melted. But this journey will be unsafe, because, in addition to the treachery of nature, much more dangerous obstacles await our heroes along the way, for example, other people who also really want to survive.