"May every son be rewarded equal to what he rewarded his father! The mysterious words of Christ, found in the hall of the sanctuary, should reveal the secret of the "fifth level." The largest analyst, the head of the X-5 department, is racking his brains, trying to understand the meaning These words. A large-scale investigation is underway with the participation of management agents and a group of scientists. One of the threads of the investigation leads to a convent located in the depths of the Oryol region. In one of the rooms of the monastery, a dying old woman mutters strange words... The words of the old woman are the key to the solution. How to understand the meaning of these strange words? The new puzzle brings the search to a standstill. And then they remember the story of the Russian Archbishop Sergius. The myth said: Tsar Ivan the Terrible ordered the execution of the head of the guards, Prince Eustace Mandryga, and ordered the coffin with the body of the prince to be placed in one. from the Kremlin dungeons and surround it with icons with the faces of 25 saints."