Chen Yuan, a graduate student in archeology, travels through Zhenguan Chang'an. He is penniless and has only a mobile phone that can connect all the worlds. He is forced to start live streaming to make money. He originally wanted to live a small life, but he received his first private job from "Tian Khan", the top brother on the list of top rewards - investigating the "painted beauties" in Chang'an City. Under the lens, there are precision circuits under the beauty's skin.
Only then did Chen Yuan realize that he was not the only one who had traveled through time. An organization called the "Tushihui" is trying to systematically replace the flesh and blood of the Tang Dynasty with a "perfect" blueprint for the future. And His Majesty Taizong, who spent a lot of money in the live broadcast room and knew him well, seemed to have expected this.
From the unsolved cases in the ghost market to the mystery of the imperial examination, from behind natural disasters to the depths of the underground palace, Chen Yuan had to walk on the dark side of history. The only thing he can rely on is the countless pairs of eyes on the other side of the live broadcast room, and the emperor who puts the world on the gambling table. When two audiences in time and space join forces with a lonely emperor, what they have to fight is a "civilization"-level struggle against the entire era.