In the super-city "Xinhan City" in 2077, human memories can be digitized, backed up, and even edited. "Omniscient Technology" company has announced the arrival of the era of spiritual immortality with its "Eternal Brain" service. However, this technology has also given rise to a new darkness - memory theft, personality tampering, and consciousness imprisonment.
Ling Su, a neural architect who once stood at the top of technology but lost his memory due to an accident, now wanders the gray areas of the city as a "memory detective". He accepted a difficult commission: After using the "Immortal Brain" service, a wealthy businessman fell into a deep and irreversible coma, and his consciousness was "locked" in his own digital backup.
When Ling Su dived into the depths of the victim's memory, what he found was not a simple system failure, but a recurring "ghost" fragment that did not belong to anyone. As the investigation deepened, he was horrified to discover that this "ghost" had left the same imprint on the memories of multiple comatose people. All clues pointed to an experimental accident that had been completely covered up many years ago - and that accident was the beginning of his own memory gap.
While dealing with "Omniscient Technology", he unexpectedly met Wen Jing, the company's core researcher. This seemingly cold woman seems to hold the key to unlocking all mysteries. They are forced to form a fragile alliance and step by step uncover the shocking conspiracy hidden under the city's glamorous appearance. What they have to fight is not only a huge technological empire, but also a real "ghost" that feeds on human forgetfulness and lurks in the sea of data.