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XXIII century. There are no wars, there are no insurmountable civilizational differences between the peoples of the Earth, diseases and crime have almost been defeated. The Earth's population has stabilized and there seems to be enough space for everyone. But it turns out that the series shown on TV about space war is not science fiction, but a documentary film, that next to this well-fed and prosperous world there is another, where the descendants of earthlings who colonized fifty planets are waging a stubborn war with a race of deflating robots, where a city with a population 80 thousand is considered huge. In this world, no one is surprised by a schoolboy piloting a plane on his own, or by the fact that a 12-year-old girl has to weld a hole in the skin of a spaceship faster than all the air will come out of a broken spacesuit. And now the two worlds have come into contact. At the military base of Port Shambhala in the Himalayas, founded by the Spaceians to protect the Earth from the Shiyaars, the first generation has grown up, which can no longer help but consider the Earth as their home planet.