Artyom and other civilians, along with the military, travel from one mothballed base to another in the hope that one day they will be able to give the enemy a worthy rebuff. People are tired, it is still unknown how exactly to hit the enemy. There are questions, but no answers, because the survivors cannot afford a break. On their heels, possessing almost a mystical sense, he follows - an unknown enemy. But then one day, in one of the warehouses, engineer Artyom finds old radar equipment and thereby starts the active phase of the confrontation. The remnants of humanity now have to rethink a lot. And your own behavior, and the degree of responsibility for it, and the nature of the enemy.