The Imperial Jade Seal, symbol of the emperor's authority, mysteriously vanishes during a palace banquet. The emperor is furious, but keeps the matter secret. At the same time, bizarre cases multiply in and around the capital. Each victim bears a strange mark or clue linked to the legends surrounding the seal, as if someone is using a trail of bloodshed to find it or conceal its whereabouts. While examining a corpse, Shen Jinghong is unexpectedly drawn into this shocking conspiracy.
