In a highly networked future world, a subconscious interaction technology called "Xin Yuan" is widely used. The protagonist is a down-and-out "memory detective" who is good at finding the truth in the fragments of other people's subconscious minds. He is forced to be involved in a huge conspiracy. He must use his wisdom to navigate step by step in the gap between reality and consciousness, and play dangerous subconscious games with the black hands hidden behind the scenes.