In the "Silent City", an isolated modern city, there is an ancient legend - there is a group of extraordinary beings called "Connoisseurs" in the world. They feed on human beings' "extreme emotions" and compose eternal music with them. Every hundred years, they will come to a certain place and hold a "Gluttonous Banquet". But this time, the stage of the feast is in the City of Silence.
Bizarre murders have occurred one after another in the Silent City, and the bodies of the deceased have been partially "finished" - either displayed like works of art, or reconstructed into strange forms. Forensic doctor Chen Mo found that all the deceased had experienced extreme fear, ecstasy or pain before death, as if their emotions had been "absorbed" by some kind of existence. He investigated together with Su Lan, a female detective with keen intuition but carrying a secret, and gradually came to the truth about the "Connoisseur" and the "Gluttonous Banquet". They realized that they and the entire city's residents were just "ingredients" in this grand banquet. The mastermind behind this feast may be hidden among the highest levels of power in the city. What they have to face is not only bloody killing, but also the ultimate test of human nature.