In the future city "New Arc City", memories can be extracted, stored, and traded, becoming precious commodities called "Memory Crystals." Ling Xiu, a "blank slate" who lost all his personal memories due to an accident, became the most special private detective in the city. He is not bound by past experiences and can interpret the broken residual information in the memory crystal with the purest logic and intuition.
One day, the technology giant Su Zheming was killed at home. The most important research result of his life - a "root memory crystal" carrying disruptive technology disappeared. His daughter Su Wan has no choice but to entrust Ling Xiu, a "blank slate" detective who is rejected by mainstream society.
Ling Xiu accepted the commission, but found that he was drawn into a huge whirlpool woven by memories. Clues point to the black market, top-level plutocrats, and memory hunters who have been forgotten in the shadows of the city. In the process of pursuing the truth, those memory fragments that did not belong to him began to resonate strangely with his blank brain, and a deliberately buried secret about his own identity was about to be revealed. What he wants to find is not only a memory crystal, but also his own lost past.