At the heart of the new novel by the famous Russian military writer Nikolai Andreevich Cherkashin, the fate of the Russian Cossack officer Nikolai Provatorov is full of sharp turns and adventures, falls and rises, losses and successes. It can be traced against the background of real historical events - from the First World War to the beginning of the Great Patriotic War. The key theme is the loyalty of the protagonist to the Motherland and the oath under any circumstances.