In the future city "New Huanjing" where neon lights and rain are intertwined, Lin Zhou is a top "memory архивист" who is responsible for organizing and sealing other people's memory data. His life was as peaceful as a pool of stagnant water, until a memory sample numbered 734 gave him a glimpse of a picture that had never existed in his mind but was extremely familiar. A mysterious woman who calls herself "K" then appears, revealing a cruel truth: Lin Zhou is not "himself", but an "echoer" who has been implanted with the memories of others. In order to find his true self, Lin Zhou was forced to embark on the road of escape. In the pursuit of a huge enterprise and the maze of confused memories, he must become a ferryman across the abyss of his own existence.
