The Red Desert is not the most favorable place to live. Only high, massive walls can protect the remnants of local civilization from a hostile environment. But despite all the danger, survivors need to go outside the city to maintain trade relations with other surviving cities. The caravan leaves the city, it is accompanied by riders on robo-dinosaurs. In a dry desert where a drop of water is worth its weight in gold, and fuel is the main element of trade, these lizards are the best vehicle since they can do without water and fuel for a long time. The path of the caravan will be difficult, it will pass through the dangerous and uncharted lands of the abandoned cities of the past world. And who knows, maybe this path will be the last for them ...