In the "ink world" where words constitute everything and reality is what is written, Shen Yan, the former alien zookeeper, hides a fatal secret: he protects A Yuan, the last flesh-and-blood human girl, who is a paradox outside the "rules" of this world. When the "Silent Library" that can swallow up the pages of real books approaches with the breath of "reality", Shen Yan must use his understanding of conceptual creatures and a taboo "Origin Parchment" to struggle to survive on the edge of the doomsday where words collapse. However, he gradually discovered that this exquisite book universe itself was actually a huge cage of consciousness, and he himself might be the key to building the cage. He must make a choice between protecting A Yuan and uncovering the cruel truth of the world - whether to stay in the perfect story and survive, or to tear up the pages of the book and face the reality of nothingness.
