In the future city "Liuguang City" where memories can be extracted, stored and traded, Lin Mo, a top memory mediator, makes a living by repairing other people's broken memories, but he can't find his own past. One day, a mysterious woman Xiao Lan came to his door with a glass box that sealed forbidden memories and asked him to destroy it completely. While exploring this memory, Lin Mo actually caught a glimpse of an afterimage related to his lost past - a silver crow emblem. This dangerous memory is not only the secret that Xiao Lan is determined to bury, but it may also be the only key for Lin Mo to find himself. In the whirlpool of lies and truth, he must make a choice: stick to the boundaries of his profession, or step into the sea of oblivion that can swallow everything to salvage his own island.
