In the near-future city "Qiongdu" where memories can be edited and archived, Lin Mo, a top memory planner, uses his calm and precise methods to trim the painful past for clients. However, his own memory began to show unexplained cracks. A mysterious woman "Xiao" appears, bringing a key that does not belong to him, and mentions a collectively forgotten disaster - "Silent Fall". Lin Mo is forced to embark on a dangerous journey to recover his past. He discovers that he is not only the planner of memory, but also the core of tampered history. In a city built on oblivion, he must decide whether to embrace a false peace or awaken to a cruel truth that could turn the entire world upside down.
