From among the participants of a local conflict in the Maaluma mountains, Captain Sergey Tarkhanov and military doctor Vadim Lyakhov are turned into key figures of a large geopolitical game involving influential circles in Russia and the “black international,” uniting everyone dissatisfied with the established order. They have to change not only their names and biographies, but also… the time in which they live. Tarkhanov and Lyakhov, carrying out their duty, must prevent a catastrophe that could claim the lives of millions of people.