In the near future city "Xinhai City", M-Crystal Tech has completely changed the world. Human memories can be stored, read and even traded like data. The elite avoid risks by buying the "experience memories" of successful people, while the people at the bottom sell their memories to earn a living, and a huge memory industry emerged.
The protagonist **Ling Su** is a top "memory adjuster". His job is to repair and sort out damaged memory fragments. But he himself is a "lost man" of memory - he has lost all memories before the age of fifteen, leaving only some unexplained fragmented illusions.
A bizarre commission broke his peaceful life. Business tycoon Zhao Qiming committed suicide in public, but his family is convinced that he was murdered because his memory was "overwritten" a week before his death. Unable to find evidence through conventional means, the police had no choice but to turn to Ling Su for help.
After diving into the abyss of the deceased's broken memories, Ling Su was shocked to discover that there was a "ghost mark" in Zhao Qiming's memory that belonged to no one. This mark actually matched a symbol in his own memory illusion.
In order to pursue the truth and find himself, Ling Su began an in-depth investigation. He met a mysterious information dealer who wandered on the edge of the black market of memory - **Yexingtong**. She seems to know a lot about "ghost marks", but she deliberately hides something.
