1812 Prince Vasily Vereisky, an employee of the newly created Russian military intelligence, retires after the failure in Paris. Vasily Mikhailovich goes to his estate. The Ministry of War asks him to assist the provincial authorities in capturing the robber Dubrovsky. He, in turn, is hunting for the Vereisky family heirloom - the fathom of the Grand Dukes of Tver. Vereisky's bride should wear it to her wedding. Napoleon promised three hundred thousand francs for the princely decoration. Sazhenye is one of the symbols of feudal power. After the capture of the Russian Empire, it is planned to turn it into a confederation of appanage principalities. Artifacts should give the reforms a historical setting...