Lu Jin, a modern detective, wakes up and transforms into a good-for-nothing prince in the fictional Yunhuang Continent. As soon as he opens his eyes, he stumbles upon the "accidental" drowning case of a maid from the Hou Mansion. I wanted to investigate the case to prove my innocence, but I was entangled by Shen Xingci, a knight-errant who suddenly appeared - this guy calls himself "the best detective in the world", but in fact he can't even distinguish clues from shit, and he also has the buff to turn serious detective work into a comedy scene. One is extremely calm and the other is ridiculously funny. The two time travelers are forced to form a team. They not only have to solve a series of unsolved cases in Qingyang City (the missing bride, the talking corpse, the secret of the midnight haunted house), but also face the difficulties of ancient bureaucrats and the conspiracy of Jianghu forces. What's even weirder is that behind every case there is a secret of time travel, and their combination has become the only key to breaking the deadlock. There are a lot of jokes on the way to the investigation, and there is danger hidden behind the suspense. Can the "crouching dragon and phoenix" pair find out the mastermind amidst the funny banter?