Egor Letov, a professional military man, is offered a contract that cannot be refused. The fee is millions of dollars. But the task... He must go back in time and become the bodyguard of the Emperor of All Rus', Peter Alekseevich, whom the bad alien intelligence services really want to finish off. And in order to fulfill this contract, Yegor will have to become... Alexander Menshikov. The Most Serene Prince. A military leader. A companion of Peter the Great. Because there should be no unnecessary characters in History. Yegor copes with the task brilliantly. True, he fails to avoid interference in History. And problems arise with returning home...