In the "Mirror City" dominated by technology and order, senior memory retrieval engineer Ling Su's job is to sneak into other people's memories and uncover the truth. Calm and precise, he treats memories as data to be analyzed. However, during a deep memory dive for the mysterious prisoner "Zero", a well-designed "memory explosion" implanted a burning memory fragment that did not belong to him into his mind. From then on, the boundary between fantasy and reality began to blur. In order to find himself, Ling Su was forced to embark on a dangerous path, searching in the maze of intertwined memories, only to find that the truth he was pursuing was enough to subvert the foundation of the entire Mirror City and everything he knew.