A murder that shouldn't have happened made him discover that there were "errors" in the world that could not be recorded.
When everyone chooses to forget, he is forced to remember the truth.
In reality, he is an investigator excluded by the system; in his dream, he steps into an abnormal world called "Abyss".
From passive involvement to active control, he investigates cases, pays the price, and fights corrections in a dual world.
When the first shocking conspiracy surfaced, he realized that the real enemy was not a certain person, but the world that was forcibly maintained as "normal."