In the metro, the rare daredevils who had the guts to venture to the surface were called stalkers. In protective suits and gas masks with tinted glass, they were heavily armed as they ascended to the surface in search of items that were necessities for everyone: military supplies, equipment, replacement parts, fuel… There were hundreds of men who dared to do this. Those who were able to make it back alive could be counted on one’s fingers – and these men were worth their weight in gold. They were valued even more highly than former metro employees. All kinds of dangers awaited those who dared to go up above – from the radiation to the ghoulish creatures it had created. There was life there too, on the surface, but it was no longer life according to the customary human conception of it.

Every stalker became a living legend, a demigod, whom everyone, young and old, regarded with rapt amazement. In a world in which there was nowhere left to sail or fly, and the words ‘pilot’ and ‘sailor’ were becoming dull and losing their meaning, children dreamed of becoming stalkers. To strike out, clothed in shining armour, accompanied by hundreds of gazes of adoration and gratitude, climbing to the surface, to the realm of the gods, to do battle with monsters and, returning underground, to bring the people fuel, military supplies, light and fire. To bring life.

Artyom, his friend Zhenya, and Vitalik the Splinter, all wanted to become stalkers. And, compelling themselves to climb upwards along the horrifying, screeching escalator with its collapsing steps, they imagined themselves in protective suits, with radiation damage monitors, with hulking machine guns at the ready, just as one would expect of real stalkers. But they had neither radiation monitors, nor protection, and instead of imposing army-issue machine guns, they had only the ancient double-barrelled rifle, which, perhaps, didn’t even shoot at all…

Before long, their ascent was complete, and they found themselves almost on the surface. Fortunately, it was night; otherwise, they would have been blinded. Eyes accustomed to darkness and to the crimson light of bonfires and emergency lamps in their many years of life underground wouldn’t have withstood the glare. Blinded and helpless, they would have been unlikely to make it back home again.

The vestibule of the Botanical Garden station was almost destroyed; half of the roof had collapsed, and through it one could see the radioactive dust of the dark-blue summer sky, already cleansed of clouds, and strewn with myriad stars. But what was a starry sky for a child who wasn’t even capable of imagining that a ceiling might not be above his head? When you lift your gaze, and it doesn’t run up against concrete coverings and rotten networks of wires and pipes, but is lost instead in a dark-blue abyss, gaping suddenly above your head – what an impression! And the stars! Could anyone who had never seen stars possibly imagine what infinity is, when, most likely, the very concept of infinity first appeared among humans inspired, once upon a time, by the nocturnal vault of the heavens? Millions of shining lights, silver nails driven into a dome of dark blue velvet…

The boys stood for three, five, then ten minutes, unable to utter a word. They wouldn’t even have moved, and by morning would certainly have been cooked alive, if they hadn’t heard a bloodcurdling howl ring out nearby. Coming to their senses, they rushed headlong back to the escalator, and raced down it as fast as their legs could carry them, having thrown all caution to the wind, and several times nearly plunging downwards, into the teeth of the gears. Supporting each other, and pulling each other out, they made the journey back in a matter of seconds.

Spinning down the final ten steps like a top, having lost the double-barrelled rifle along the way, they immediately lunged for the control panel of the barrier. But, damn it, the rusted old iron had become wedged, and it didn’t want to return to its place. Scared half to death that the monsters would pursue them from the surface, they raced off homewards, to the northern cordon.

But, remembering that they’d probably done something very bad, having left the hermetic gates open, and had possibly left the path downward, into the metro, and to people, open for the mutants, they found the time to agree to keep their lips sealed, and not to tell any of the adults where they’d been. At the cordon, they said that they’d gone to a side tunnel to hunt for rats, but had lost their gun, become frightened, and returned.

Artyom, of course, caught hell from his stepfather. His rear end smarted for a long time from that officer’s belt, but Artyom held up like a captive partisan, and didn’t blurt out his military secret. And his comrades kept silent as well.

Everyone believed them.

But now, when he thought of their escapade, Artyom fell, more and more often, into reflection. Was this journey, and, more importantly, the barrier they’d opened, connected somehow to the scum that had been assaulting their cordons for the last several years?

Greeting passers-by, stopping now and then to hear some news, to shake hands with a friend, to land a kiss on the cheek of a familiar girl, to tell the older generations about his stepfather’s dealings, Artyom finally reached his home. Nobody was there, and he decided not to wait for his stepfather but to go to bed: an eight-hour watch was enough to take anyone off their feet. He threw off his boots, took off his jacket and planted his face in the pillow. Sleep didn’t make him wait.

The flaps of the tent were lifted and a massive figure slipped quietly inside, whose face couldn’t be seen. The only thing visible was the ominous gleam of a smooth skull reflecting the red emergency lights. A muffled voice was heard: ‘We meet again. Your stepfather, I see, is not here. Doesn’t matter. We’ll find him. Sooner or later. He won’t get away. For now, you’ll come with me. We have something to talk about. For example, the barrier at the Botanical Gardens.’

Artyom, frozen, recognized the guy he had met at the cordon earlier, the man who had introduced himself as Hunter.

The man came closer, slowly, silently, and his face was still not visible. For some reason the light was falling in a strange way. Artyom wanted to call for help, but a powerful hand, as cold as death, clamped onto his mouth. At last he managed to grab hold of a lantern, turn it on and light up the person’s face. What he saw, rendered him powerless for a moment and filled him with horror: what loomed in front of him was not a human face, but a terrible black muzzle with two huge, vacant and white-less eyes and a gaping maw.

Artyom darted and threw himself out of the tent. The light suddenly went out and the station became totally dark. There was only some weak reflected light from a small fire somewhere in the distance. Without pausing for thought, Artyom rushed in that direction, toward the light. The ghoul jumped towards him from behind, growling, ‘Stop! You have nowhere to run!’ He roared with terrifying laughter, which slowly became a familiar graveyard howl. Artyom ran off, without turning to look, hearing the footfalls of heavy boots behind him, unhurried, even, as if his pursuer knew that there was nowhere to run, that Artyom would be caught sooner or later.

Artyom ran up to the fire and saw a figure sitting there with its back to him. He was going to tap the sitting person on the shoulder and ask for help, but the person suddenly fell backwards and it was clear that he had been dead a long time and his face was covered with hoarfrost for some reason. And in the face of this frozen person, Artyom recognized Uncle Sasha, his stepfather.

‘Hey, Artyom! That was a good sleep! Now get up! You’ve been snoozing for seven hours in a row already… get up sleepyhead! We have guests coming!’ Sukhoi’s voice rang out.