Semen Svalov lives alone in an old Khrushchyovka apartment he inherited from his late grandmother—a woman obsessed with strange conspiracies and hidden truths. Her cryptic letters, the unnerving noises behind the walls, and the constant sense of being monitored turn Semen’s quiet life into a journey through paranoia and mystery.

What secrets did his grandmother leave for him? Who is listening to his every thought? And what unseen forces shape the reality within these crumbling walls? The answers may be closer than you think—or buried far beyond your reach.