The zero years of the 21st century duly flowed into the tenth and reached almost half, when Katya Malysheva had to return to the distant past. Like a bolt from the blue, an unfinished business from a long time ago fell upon them and Valentin and carried away their former companions with it. However, not entirely against the will of both. Valentin was interested in the practical aspect, and Katya was attracted by the accompanying adventures. Among other conflicts of long history, stolen treasures came to light, at least it seemed so at first, then the guesses began to be confirmed. It should be noted that by that time Katya Malysheva returned to her roots, namely, she turned out to be the owner of a publishing house, where she had long served as an editor, and unnoticed for herself, she connected the publishing capacity (almost zero) to the virtual search for the missing treasure. The experiment was an amazing success in all respects...