Luo Xiang, an antique broker, collects a bronze box on his behalf, but becomes involved in a fatal mystery. The trader died mysteriously, and the police named him as the murderer. Lin Yan, his brother who had disappeared for many years, suddenly appeared, with a murderous intention hidden under his gentle greetings.
The bronze box hides an ancient mechanism, and two jade cicadas appear one after another, which involves the mysterious organization "Zhulong" and the legendary place "Guixu". Luo Xiang had to survive the police wanted, underworld pursuit and brother's betrayal, and relied on the "human nature deduction" developed through many years of hard work to uncover the secrets in the box step by step.
When the conspiracies of the village guarding Guixu, the villains pursuing immortality, and former friends become intertwined, the only thing Luo Xiang can trust is the bronze box that is getting hotter in his arms, and a warning that lingers in his ears - "Don't open it"...
