"The Lost World" is a fantasy struggle novel that combines elements of Eastern mythology, fairy tales and modern urban settings. Behind the seemingly peaceful modern city, there is a "Fairy World Crack" unknown to the world - the Wizard's Gate. This rift opens every hundred years, connecting the human world with a fairyland that is gradually declining.
The protagonist of the story, Lin Mo, an ordinary urban youth, accidentally discovered on his twenty-eighth birthday that he was the awakened person of the last bloodline of the ancient immortal clan. He is forced to be involved in a fairyland struggle that spans thousands of years: on one side is the "Gatekeeper" organization that tries to maintain the existence of the fairyland by controlling the gate of the fairyland; on the other side is the "Returner" group that intends to completely destroy the fairyland and return spiritual power to the human world; and there is also a mysterious third party hidden in the dark, intending to completely integrate the two worlds and create a new world law.
When Lin Mo uncovers the mystery of his life experience, he will face a cruel choice: to become the "key" to maintain the old order, or to become the "variable" that subverts everything? In the lost world where friendship, love and betrayal are intertwined, he must make a final choice on the day when the door to the fairyland is about to open, and this decision will forever change the fate of the human world and the fairy world.