In a future city where technology can accurately erase memories, Lin Zhou, a top "memory scavenger", makes a living by erasing the pain of others, but he still cannot get rid of his obsession with finding his missing sister. A mysterious and high-priced commission requires him to delete a seemingly harmless memory of a childhood lullaby. When he dived into the depths of his client's brain, he discovered that the melody was the only key to his lost past. The client's secrets and the disappearance of his sister intertwined into a huge web, and Lin Zhou was forced to stand on the edge of the cliff between professional ethics and personal truth. Every exploration is a betrayal of memory; every forgetting may be eternal loss. He must be on the island of memory and sail towards the sea of oblivion full of lies.
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