Russia. End of the 19th century. Narodnaya Volya terrorists sentenced Tsar-Liberator Alexander II to death. A bloody hunt for the Russian emperor begins. However, the entire powerful security system of the empire is unable to protect the sovereign. The king was surrounded by an invisible network of betrayal, the threads of which stretch very high. And terrorists are just a tool in the hands of the conspirators.

But the conspiracy is opposed by members of a mysterious league whose goal is to preserve the monarchy. Save the empire. And prevent the country from falling into the abyss of anarchy and anarchy.

Who benefits from the murder of the emperor? Who or what is hurrying the killers? And why, half a century later, Stalin ordered the search for the surviving members of the league?