You are already over fifty. You have come to terms with the fact that life has been lived and you no longer expect any changes. You are standing on the embankment of one of the Black Sea sanatoriums and hear light steps behind you. Can you imagine that fate has already opened a funnel that in a moment will draw you into a cycle of extraordinary, amazing, but also dangerous events? That you will soon enter into a fictitious marriage with a former compatriot who now lives in the distant Latin American country of Raguay? That this marriage will bring you a fortune, but in return will require you to participate in breathtaking adventures? That in a few months you will lie exhausted on a stone, and the splashes and roar of the waterfall that you just almost fell into will reach you? And that your destiny is a military uniform with the emblems of the special services, and on your shoulders two different shoulder straps: one Russian, and the other American - do you know? No? You'll find out soon! In just two paragraphs everything will begin. In the meantime, Aristarkh Vyazemsky, breathe in the midnight sanatorium air, make full use of your last peaceful minutes...