22-Year-old Lin Mo, a senior in college, is a loser in programming and has a disease in his right eye - he always sees things that shouldn't exist.
The thirteenth floor of the library, the seventh step at the end of the corridor, the reflection of one missing person in the mirror... Everyone said it was an illusion, until some people began to "suicide" bizarrely on campus.
That night, he was trapped in the mirror world of the library's underground warehouse, and for the first time he saw clearly the "rules and lines" that entangled reality - they were as cold, orderly, and deadly as codes. Deep in his right eye, a dark red mark slowly lit up.
He is the "Dark Eyed One", the one-in-a-million observer of supernatural rules.
He survived, but at the cost of entering a world beyond the reach of ordinary people's imagination: the curse woven by the crying baby in the hospital delivery room, the murderous virus implanted in dreams, the "no turning back" death game in the abandoned mental hospital...
A mysterious organization called "Hades" secretly harvests fear, and Lin Mo's parents - who died in an "accidental fire" twelve years ago - were actually the strongest dark-eyed members of the Night Watch organization. That fire was not an accident, it was a hunt.
As Dark Eyes awakened again and again, Lin Mo saw a deeper truth: rules can be interpreted, exploited, and even rewritten. But every time he uses his abilities, he is pushed into the inhuman abyss.
Companions are sacrificing, enemies are approaching, and the ultimate "ancient existence" is awakening - it is formed by the fusion of the consciousness of countless dark-eyed people, and Lin Mo is the last key it has been waiting for for a long time.
