The Red October is over; winter of 1917 has arrived—cold weather, but hot on events. Heated negotiations are underway; ahead lies the Brest Peace, and then— the Civil War… These are not easy times. But our contemporary, Artem, who ends up in the body of a zemstvo doctor, Ivan Pavlovich Petrov, does not despair. He sets a goal for himself—to adjust the course of history in such a way as to avoid the bloody horror and human losses. Besides, there is also an opportunity: the higher-ups insistently summon him to Moscow. What will the doctor choose—to stay with his friends and his beloved, or to leave them for a good common cause?