Lin Shouyu, an ancient book restorer, inherited a dilapidated old bookstore. He thought that the rest of his life would be spent with dusty pages, until he repaired a broken manuscript from an unidentifiable dynasty.
Ink stains oozed from the pages under his fingertips, and prayers that were definitely not written by humans emerged. That night, there was the sound of turning books in the bookstore, and the books on the shelves changed their order. The first "guest" knocked on the door at midnight, smelling of dried river mud, and asked: "Has my ending been changed?"
Only then did Lin Shouyu realize that what he was repairing was not an ancient book, but a "yin book" that imprisoned unresolved obsessions and terrifying past. Every book that is awakened is a curse waiting for him to "complete" it. He must enter the world of the book, experience the strange history that has been erased, and correct the twisted ending in order to appease his resentment.
However, the more stories he completed, the more he discovered that all the clues pointed to a sealed ultimate secret - about the origin of his family's bloodline, and an indescribable thing that was slowly crawling towards reality from the cracks in all the "yin books". This time, what he needs to repair is the boundary of the entire real world.
