In the future city "Xindu" where memories can be edited and deleted, Ling Su, the top memory reviewer, is a man without a past. He dissected the criminal's memory with scalpel-like precision, but was unable to piece together his own blanks. A seemingly ordinary "memory purification" task led him to a mysterious woman who did not exist in any records-Ye Ying. She is like a ghost in the dark, carrying the memory of a "rain" forgotten by the entire city. In order to pursue the truth, Ling Su is forced to embark on a path that betrays his own beliefs. Between the fictional peace and the cruel reality, he will discover that the deepest lie is buried deep in his mind.
