Lin Zhiwei is an ancient book restorer who works with paste, tweezers, and rice paper every day. Her life is like a pool of stagnant water, boring, quiet, and uncontested. The good news: She restored an original copy from the Republic of China period with exquisite craftsmanship, and Party A's father was very satisfied. Bad news: Hidden in the interlayer of this ancient book is a yellowed list of victims of a serial disappearance thirty years ago, and one of the names is her grandfather who has been missing for many years. Originally, he just wanted to quietly repair history, but he was forced to become a non-staff member of the criminal investigation team. Lin Zhiwei held a scalpel-like scalpel that was actually a book-editing tool. Facing the serious-faced criminal police captain, Lin Zhiwei spread her hands helplessly: "Officer, I am really just a book-editor, not a criminal investigator." But with her keen observation, from the fiber direction of the paper to the penetration depth of the ink, she gradually restored the murderer's "death code" hidden between the lines, and the entire police station fell silent. There is no super power, it all depends on an ancient book, a pair of wise eyes, and a stubborn heart with obsessive-compulsive disorder. When the dust-laden truth was "repaired" bit by bit, the murderer finally couldn't hold back anymore and reached out to her again. Lin Zhiwei: I am not afraid of cultivating books, but cultivating people... I can also try it.