Summer of 1814. The hero of the war and the famous poet Denis Vasilyevich Davydov returns to Moscow, where a series of mysterious crimes takes place—murders of young girls, dancers from the ballet school of the director of the Imperial Theatres, Apollon Maykov. But all the murdered girls were close acquaintances of the Grand Duke Konstantin Pavlovich, brother of Russia’s Tsar Alexander. For the heir to the throne, Konstantin, since his youth, a whole trail of very unsavory affairs has followed him. And it is Davydov who will help the Grand Duke get out of them—actually, Davydov is one of us, a modern man whose soul once inhabited the body of a hussar and poet. Moscow, Saint Petersburg, and Warsaw—these are the places where there’s room for intrigue and the most sophisticated crimes… And all of this against the backdrop of Napoleon Bonaparte’s “Hundred Days”! The usurper has taken the throne again and is plotting a new war—unaware that very soon he’ll face Waterloo.