Humanity has long left its planet Earth, terrestrial settlements and colonies are scattered throughout the universe. It was then that it became clear that there are not so many oxygen planets in the universe, and even those with water. That it is precisely such planets that are the most priceless gift for any race and civilization, of which there are already many in our Milky Way galaxy. But a galactic aggressor appears who, for the sake of the progress of his race, wages interstellar wars. Our story will be about one such war, how it began and ended. How ordinary people become supermen in such wars.