In the future city "Xinhai City" where memories can be erased and traded, Ling Su, the former memory prosecutor and current private memory detective, spends his days working with the broken afterimages of others. He is cynical, but inside he is trapped by a blank past. A mysterious commission broke his numb life: an elegant woman named Xian Yin asked him to find a "non-existent movement" - a melody in which the memories of all insiders had been accurately erased. This journey of pursuit not only dragged Ling Su into a huge whirlpool about the ethics of technology and the truth about human nature, but also forced him to face his own horrifying memories that had been dusted away and could subvert the entire world. In the conspiracy as deep as the eternal night, can he find that whisper of dawn?
