A business trip to another planet, which in one day knocked Ivan Proshin's life out of its usual rut, seemed at first an easy walk in search of artifacts of an alien civilization. But the further Proshin and his companions delved into the jungle of an alien forest, the more tightly the knot of contradictions was tightened, tying together the earth colonies, the planet Earth itself and only then aliens. And in order to cut the Gordian knot, you will have to return to the solar system, where, for the sake of life on Earth, a grandiose scam is started with the newly opened oxygen world.