Eight lifelong friends. One unfathomable nightmare. Zero chance of turning back.

When Uday, Shravan, Bipin, Atul, Harsh, and Mayank gather in their familiar apartment, their biggest concern is a canceled trip to Goa and the usual banter of young adulthood. Outside, background news broadcasts whisper about unusual climate shifts and an unseasonably warm arctic thaw in Siberia. It all feels light-years away—until the power flickers, emergency sirens shatter the evening quiet, and the world they knew collapses overnight.

Deep in the frigid expanse of Russia’s Yamal Peninsula, Research Facility Seven has accidentally unearthed an ancient pathogen trapped within the permafrost for millennia. Unchecked and mutating with terrifying speed, the virus doesn't just kill—it alters human behavior, turning infected hosts into predatory threats and leaving survivors to question every shadow, every sound, and every desperate voice in the dark.

As society unravels from the frozen arctic tundra to the crowded streets of India, the six friends find themselves trapped inside their apartment building. When phantom knocking echoes from empty hallways and desperate pleas for help turn out to be lethal traps, Uday is forced to take the lead. To survive, the group must leave behind the safety of their home, navigate abandoned streets, and make their way toward a rumored survival center—discovering along the way that in a world stripped of order, the greatest danger isn't just what lurks in the dark, but how far they are willing to go to keep each other alive.