In the year 2135 of the old calendar, the "Great Stagnation" came. Global networks collapse into a chaotic data fog known as the "fog wall." The physical world merges with digital debris, giving birth to strange "data entities". The survivors established a stronghold in the ruins and relied on mining data fragments from the old era in exchange for survival supplies. Ye Ran, a "cleaner" who can see the afterimage of data flow, is looking for the answer to his sister's disappearance in the wasteland where reality and fiction are intertwined.
