In the near future where memories can be extracted, purified and traded, Lin Zhou is a top "memory cleaner" who specializes in erasing trauma and leaving perfect memories for clients. He numbly shuttles through the joys and sorrows of others to escape his own buried past. Once, while handling a seemingly ordinary request to purify the memory of the deceased wife of a rich man, he accidentally discovered a "ghost fragment" that did not belong to the owner - a horrific memory recording the moment of death. This discovery draws him into a huge vortex of conspiracy, involving giant companies that control memory technology and hidden secrets. In order to find out the truth, Lin Zhou must face his long-lost nightmare.
