In 2082 humanity made sure, that it is not lonely in Universe. The numberless reconnaissance probes of new-comers wrapped Earth a luminous spider web. Burning out in an atmosphere, they had time to pass a signal outside the Sunny system. On establishment of contact with extraterrestrial civilization a ship "Тезей" is directed with a command from the best specialists in the area. But, when researchers will get to the aim, they will understand that most unbelievable fantasies about alien reason grow dim as compared to reality, and on kitty the fate of Earth and all humanity is put.