In 2149, human civilization stands on the brink of collapse. To preserve it, Eden Corporation launches the "Consciousness Upload Program," connecting human minds to a virtual world.
Lin Shen was just an ordinary programmer in Yunhai City, until one day he discovers:
Time repeats itself.
The dead return.
And the entire city seems to be caught in an endless loop governed by some set of rules.
As more and more anomalies appear, Lin Shen gradually realizes:
This world may not be real at all.
In his search for his missing younger sister, Lin Yu, he is forced into a flight concerning "memory," "permissions," and "the truth of the world."
And 404 is more than just an error code.