A young scientist made a discovery - well, it happens. But neither he nor his friend, who took part in a seemingly harmless experiment, had any idea about the consequences of their irresponsible decision. And these consequences were enormous - they changed the lives of not only the children themselves, but also the history of their homeland, and of all humanity. Read about the incredible events that occurred in Russia after the transfer of the essences of our contemporaries into the bodies of Grand Duke Mikhail Alexandrovich and his secretary Johnson.