The neon city at midnight is always full of strange things - the suicide notes of suicides contain handwriting that does not belong to them, the bloodstains of missing persons spell out strange symbols in the surveillance corners, and the corpses in the morgue always change positions at three o'clock in the morning.
As soon as Interpol Lin Jiang was transferred, he encountered a series of murders. The deceased had a neon tube stuck in his throat and strange symbols reflected in his pupils. As the investigation deepens, he discovers that each deceased person has been exposed to a forbidden book called "The Corpse Language", and the taboo ritual of "telling things with the corpse" recorded in the book is being reproduced step by step.
When the forensic doctor Suning detected fluorescent dye under the skin of the corpse, and when the mysterious informant used Morse code to convey the warning that "neon is corpse fire", Lin Jiang was shocked: the neon lights in this city were not lit by electricity at all - they were the resentment of countless dead people, telling the truth for the murderer.
