In Xinhai City, shrouded in neon and rain, Lu Chen, a top "memory diver", makes a living by sneaking into other people's brains, pruning and deleting memories. Calm and efficient, he treats emotions as redundant codes in the data stream, until a mysterious woman named Xiao Wanqing appears. She does not seek to forget, but seeks to retrieve a memory that is buried so deeply that even she herself does not know the content. This unprecedented "reverse dive" dragged Lu Chen into a huge whirlpool. When he dived into the depths of Xiao Wanqing's broken memories, he was horrified to discover that the key to the cage that imprisoned her secrets actually held the past he had long forgotten. The truth is far more cruel than the memory itself.
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