In the near future of 2025, modern cities where technology and metaphysics are intertwined hide a thousand-year cultivation civilization.
A three-dimensional urban space composed of the abandoned chemical factory, No. 9 Middle School, and dark alley antique shops in Donghai City. In the seemingly peaceful modern city, cultivators control the world through the "hidden city". The protagonist obtains ancient inheritance and deals with the forces in the city and the hidden world. The levels of cultivation are divided into realms such as Kaimai, Tongxuan, and Jindan. Each realm corresponds to special powers in modern society.