In the near future, Cangcheng is shrouded in thick fog all year round, and there is a black market for memory trading underground that is full of taboos. People rent happiness to make up for their shortcomings and delete pain to escape the past. However, they do not know that malicious tampering and long-term implantation of foreign memories will trigger an irreversible fatal backlash. They will fall into a madness where true and false memories are intertwined, and eventually die in a strange manner, leaving no flaws.
Former detective Lu Chen was born with the ability to see memory fragments that others could not detect, but he was denounced as a lunatic. He was forced to leave his post and opened a deserted memory retrieval agency. His obsession was to find his sister who had been missing for three years. A strange case of sudden death suddenly came to his door. The deceased was his client. His death was unnatural, and his sister's unique ice-blue mark was hidden between his fingers.
As the investigation deepened, the secret organization "Guixu Pavilion" that controlled the black market surfaced, and a large number of chaotic memory fragments swept away. Lu Chen was shocked to realize that he had been regarded as the most critical pawn in this serial death puzzle from the beginning. The truth of all murder cases was tightly tied to his deliberately buried past.
