The distant future. There is only one huge continent left on the planet, washed by the waters of the world ocean. And on that continent there are only two giant cities, the inhabitants of which are so different that their enmity and disputes have not stopped for more than five hundred years. In addition, neither the inhabitants of Askonia nor the inhabitants of Irik, with all their developed technology, can leave the stratosphere. Despite the fact that guests from other worlds often hover over the planet. A graduate of the pilot school, who became interested in the past of the planet, is trying to find answers to questions that have tormented him since childhood.