In the near future where memories can be stored, traded or even stolen, Lin Mo, a former top memory restorer, discovered on the eve of the anniversary of the death of his wife Anya that the last memory of his wife in his mind had been accurately erased. This piece of memory turned into a data void is his only remaining comfort. In order to recover this "puzzle of the soul", Lin Mo returned to the gray market of memories that he had long abandoned, and tracked down a mysterious thief codenamed "Shadow". However, as the investigation deepened, he discovered that the truth was not a simple theft. Behind that forgotten time, there seems to be a secret hidden that is enough to subvert his entire understanding of his lover, the past, and even himself.
