In the near-future city "Star City" where memories can be edited and deleted, Ling Chen, a top memory master, makes a living by erasing the pain of others, but his heart is imprisoned by his own past that cannot be erased. A seemingly ordinary commission involved him in the whirlpool: the client Su Wei did not seek to forget, but only to retrieve the last memory of her late husband. When Ling Chen sneaked into the deliberately blocked memory maze, he discovered that these were not simple last words, but a key to the dark truth behind the memory technology that could subvert the world. In this game with time and power, Ling Chen must face his own inner demons, because what he finds may not only be the past of others, but also his own buried redemption.