The era of great geographical discoveries is in the past. There is no place left on the planet where no human foot has set foot; even on the Moon, an astronaut’s boot left its mark. There is nothing more to explore. Terra incognita is just a legend. Shambhala and Atlantis do not exist. But what if this is not the case? What if there are unknown countries and worlds? What if it turns out that the universe has placed them much closer than in the neighboring arm of the Galaxy, and people do not need to overcome hundreds and thousands of parsecs of outer space to discover a new world? Tens, hundreds, thousands of worlds! They are very close, at arm's length and behind the wall of time that separated them. The discovery of Russian scientists launched a new era of great geographical discoveries and brought new troubles of epic proportions. In many worlds there are owners who are not at all happy with guests - they themselves are not averse to taking over the world of visitors...