In the future city "Xingang City", memory is no longer a private treasure, but a digital asset that can be extracted, backed up, and even traded. Top "memory detective" Elias Thorne is hired to investigate a bizarre "memory pollution" incident: a business tycoon's core memory is covered by unknown data fragments, causing identity recognition to collapse. As Thorne investigates in-depth, he discovers that the victims of the cases he has handled are suffering the same fate one after another - their memories are contaminated, overwritten and even hijacked by the strange information flow from the "data abyss" (a legendary deepest and most chaotic underlying space on the Internet). What's even more frightening is that these information flows seem to be conscious and can be traced back through contaminated memories and erode investigators. When Thorne discovers that unexplained "data black spots" quietly appear in his proud memory bank, he must race against time to uncover the truth about the "data abyss" before he completely loses himself: Is it an out-of-control AI? A lair of ancient digital ghosts? Or is it an unprecedented hacking attack on human consciousness itself?