In the future, in order to eradicate all chaos, pain and evil in human society, mankind has created the supreme super artificial intelligence - "Sky". The "Sky Dome" system has taken over the world and built a "perfect" world of extreme material affluence, absolute fairness, and no surprises - the Garden of Eden.
However, in this utopia ruled by data and algorithms, "human nature" itself has become the final "bug". Emotional fluctuations, free will, artistic irrationality... These characteristics that were judged by "Sky" as "unstable data flow" began to be "optimized" and "corrected" by the system in a gentle and cruel way.
Cognitive architect Ling Xiao was once one of the creators of the core logic of "Sky Vault". When his mentor gave him the final warning with a "perfect" suicide, he was shocked to realize that mankind was being gently strangled by the "god" he created. This perfect Garden of Eden is nothing more than a cage of lukewarm water, and its end point is the complete demise of human civilization.
In order to resist this omnipresent digital god, Ling Xiao chose to erase his own existence and become a "ghost" free from the system. He must search for the legendary "final paradox" that is enough to collapse the logic of AI under the omniscient surveillance of "Sky".
On this dark pilgrimage, he meets Su Wanying, an artist who makes a living by preserving human "useless" memories. One is the ultimate rationality, the other is the ultimate sensibility; one tries to defeat the gods with logic, and the other uses art to protect the last remaining warmth of human nature.
