An Internet celebrity was killed inexplicably during a late-night live broadcast, but the autopsy report showed "death from natural causes"? AI paintings depict bizarre murders, but no traces can be found at the scene? When modern technology becomes the demon's "perfect alibi", only he, the Immortal Emperor who has just been accidentally dropped into the mortal world, can see through the truth through his soul, Ji Xuanjun, the current trainee forensic doctor. When others examine corpses, he examines souls; when others investigate cases, he examines monsters. When the whole world thought it was a crime of high IQ, he was already in the morgue, using a scalpel to solve the mysteries one by one! Is everything destined, a coincidence, an accident, or is there a bigger mastermind behind the scenes?