In this dystopian novel, the story is set in the future, where the protagonist, a mathematician, lives in a highly regulated society where citizens are known by numbers, not names, and every action is dictated by the state. Individuality and freedom are suppressed, and even the concept of love is replaced by regulated sexual liaisons. The mathematician begins to question the infallibility of the state after meeting a rebellious woman, leading to a series of events that challenge the very foundations of his world.

This novel is set in a post-apocalyptic Moscow, where the remnants of humanity have taken refuge in the underground metro system after a devastating nuclear war. The story follows Artyom, a young man who embarks on a perilous journey through the dark, mutant-infested tunnels of the metro to seek help against a new, mysterious threat that endangers the fragile existence of the metro's survivors. Along the way, he encounters various factions vying for power and control, confronts his deepest fears, and questions his beliefs and the nature of reality itself. The narrative weaves together themes of survival, hope, and the enduring human spirit in the face of overwhelming darkness.