As an intangible inheritor of paper-cutting, Lin Jianqiu also has a secret identity - the city bureau's special criminal investigation portraitist. She can empathize with the remaining emotions of the deceased through paper cutting and cut out fragments of the truth. Seven years ago, her father committed suicide due to an unjust case, and she broke up with her boyfriend Lu Chen, a prosecutor who believed in procedural justice. Nowadays, a series of murders based on lost folk customs occur, and each scene contains strange paper-cuts whose skills far exceed hers. Forced to partner with Lu Chen, who is already the head of the special case team, she discovers that all the clues point to the family's lost "Secret Scroll of Victory" and the truth behind her father's death. When the load of empathy brings her to the verge of collapse, and when the murderer finally targets her, the "most perfect work," Lin Jianqiu must cut through the fog that has shrouded her for many years, and carve out her own way of survival on the edge of the abyss of love and law.