An apocalyptic disaster from the moon suddenly descends.
An alien device from a hundred million years ago suddenly activates, and lethal gray fog engulfs the Earth. Hidden within the fog are deadly “mutation factors.” Those exposed either turn into bloodthirsty monsters or undergo an unknown evolution.
A family heirloom metal tag conceals the cipher of an alien civilization. Only when it grows hot against his chest does Lu Chuan, a designer, realize the truth: the apocalypse is not a disaster, but a test for humanity, a process of evolution.
To protect his family, he assembles a ragtag team: a nurse, a professor, a veteran, a hotpot restaurant owner... A group of ordinary people hold their floors against the hordes of corpses and evolved monsters, fighting their way out of encirclement.
As the world becomes a gray-fog inferno,
As skyscrapers turn into cages and cities into hunting grounds,
Human nature grows more terrifying than the monsters.
Their only belief is this:
To survive is humanity’s final act of defiance.
