Shen Chang'an, a doctor at Ping'an Medical Center in Beijing, has special forensic skills and loves to eat and wait for death. It wasn't until the Ming Dynasty's top spy "Ye Xiao" broke into the hospital before he died that Shen Changan was forced to learn a top-secret roster of ghosts in the imperial court and undercover agents of the mysterious organization "Eternal Life Pavilion". The list of "Night Owl" was destroyed instantly after his death, and Shen Changan was forced to become the only "living codebook" in the world.
In order to monitor and obtain the list information nearby, Gu Qinghan, the cold-tongued Jinyiwei beauty Qianhu, and Lu Lin, the No. 1 Secret agent of Dongchang who rolled his eyes at the sight of blood, were forced to work anonymously in the medical clinic and faced the dimension-reducing attacks of the mad boss lady every day. The sinister young emperor even visited privately incognito every now and then, dragging Shen Chang'an to call him his brother and test him like crazy. There are also assassinations by various forces, which continue to make the restless capital even more restless.
Amid repeated warnings from the beggar gang leader in the capital that "something bad is going to happen", Shen Changan started his career as a detective in Shura Field.
