A tragic accident threw Dmitry Melekhov into the distant past, in 1941, a few months before one of the bloodiest and most brutal periods in the history of our country. Feeling thrown into a ruthless abyss, and suffering from his own helplessness to change anything, Dmitry unsuccessfully tries to reach out to the leadership of the state. However, the flywheel of fate is not so easy to reverse and the black horde from the west, consisting of millions of soldiers, thousands of tanks and aircraft, again inflicts a terrible blow on the Soviet Union. Having hardly survived in the meat grinder of the first days of the war, Melekhov gets to Moscow and offers the owner of the Kremlin his knowledge of the future, which will never be the same.