The discovery made in 1916 by Professor Mikhail Vladimirovich Svešnikov leaves a mark on the fate of everyone who comes into contact with it, drawing them into the whirlpool of political intrigues and ancient myths, giving each person the chance to change the course of history—by putting an impossible choice in front of them.
In the 3rd book of “The Source of Happiness,” Svešnikov and Fedor Agapkin, serving as court doctors to the red leaders, see the hidden mechanism of events of 1921–1924. Lenin and Stalin are their “students”—entertaining hopes of obtaining a medicine against death and old age.
The past has intertwined with the present; reality feels like a chimera, and ancient myths have become reality. Billionaire Colt is capable of anything to get the cherished drug. Biologist Sonya Lukyanova must decipher the secret of her great-great-grandfather’s discovery. The goal is close, the solution is practically found. Only one thing remains—to look into the face of the abyss.