Autumn 1918. The senior investigator of the PetroCheka, Alexandra Ginzburg, was appointed commissar to the unreliable regiment, which had already lost two Chekists. Will Sasha be able to gain authority from the soldiers and keep the commander under control? Especially now that the White movement is united and can win. Both revolutionaries and adherents of the tradition are ready to kill and die for a happy future. But, turning into reality, dreams change, and dreamers sober up. Why in a civil war does even victory evoke a sense of defeat?