The main character Rita Drozdova finds herself in the hands of a dictaphone recording, which caused two very strange suicides and the sudden death of an old translator. Rita guesses right away what kind of voice sounds on the recording, but it takes several days to understand what is being said. The voice says that the main relic of Christians, the Holy Grail, is owned by a certain Winged Wanderer in the eternal night. Who is this Winged Wanderer? How can I find him? Suddenly realizing who he is, Rita experiences an incomparable shock...