In 2043, "grey fog" swept across the world, and the triple fog area swallowed up 90% of the land. In the fog, there were not only aberrations that could tear the human body, but also fatal memory hallucinations. Former experimental analyst Lin Ye, with the indelible "Ω" scar on his left hand, stepped into the closed stronghold "Lighthouse Town" just to find his sister who disappeared in the "Ark Experiment" ten years ago.
However, the frequent "fog escape" cases in the stronghold, the metal pieces engraved with omega symbols, and the secret games between various forces have drawn him into a deeper whirlpool - the Ark City floating on the sea is capturing experimental survivors, the nomadic fog picker tribe masters the secret language of the fog area, and the extreme Deep Fog Cult regards distortion as "evolution." When Lin Ye formed a team with Ajiu, an orphan in the fog area, Su Xiao, a deserter from Ark City, and the mysterious Doctor Chen, and went deep into the core of the fog area to find Base B, they discovered that the "grey fog" was not the product of an experimental leak, but the embodiment of the earth's "consciousness layer", and that he was actually the "Ω-1" experimental subject that could determine the survival of mankind.
From the secrets of the isolation zone in Beacon Town, to the sound traps in the turbid fog belt, to the gene extraction conspiracy in Ark City, Lin Ye not only has to fight against the half-human, half-mist "fog lord" and the Ark City Lord who pursues immortality, but also faces the warnings of tampered memories and consciousness. When the final fog wave sweeps across, and a new fog crystal door emerges deep in the fog area, he must make a choice between saving his sister, protecting the stronghold, and preventing the complete atomization of the earth - and all of this is just the beginning of the crisis in the consciousness level.