Just one fleeting acquaintance, which happened within the walls of a country mansion owned by an eccentric collector of antiquities, turns the life of a young history professor upside down. Having teamed up with the thief who introduced herself as Sofia, who dragged him into this story, the historian is forced to race against death. But what is the reason? Why did the history professor pay such a high price? A short ancient message on a yellowed piece of paper, stolen from the personal collection of an extravagant rich man, will soon reveal many secrets. It will reveal the secrets that one of the most ancient communities kept and will ultimately show how the Holy See, sunny February 1722 and frosty December 1986 are connected.