In the "Mirror City" where neon lights and acid rain intertwine, memories can be read and played back. Ling Chen, the top "echo master", specializes in sneaking into other people's broken memories to pursue the truth. When he is assigned to investigate a secret room murder case pointing to the daughter of a technology giant, he finds himself drawn into a huge whirlpool of lies, power and forbidden technology. Every time he infiltrates, he gets closer to the truth and closer to the dark past that he has buried deeply.
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