In the "New Arc City" where technology can accurately erase memories, Lin Mo, a top memory cleaner, makes a living by stripping away the pain of others, but his heart has long been eroded by countless afterimages of memories and has become numb. When a mysterious woman Su Wan appeared in front of him with a bizarre request - to erase a face she was not supposed to recognize - an out-of-control memory cleanup unexpectedly revealed the deeply buried truth. Lin Mo discovered that what he wanted to erase was his tampered past; and the system he served was built on countless stolen memories. In his pursuit and escape, he must decide whether to embrace false peace or fight for a painful new life in the ashes of memory.
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