The continuous occurrence of strange cases in the "Smoke City" - disappearances, serial killings, bizarre financial fraud, gang assassinations, collusion between government and businessmen - has plunged the police and society into panic. Interpol Gu Zhiyuan was ordered to face the danger and formed an investigation team with multi-professional talents as the backbone. Faced with layers of suspicion and interference from various social forces, the team members showed their strengths, not only revealing external mysteries, but also dissecting inner trauma. An undercurrent of sinister clues leads everyone to the mysterious force "Hidden Realm". As the truth of the case gradually emerges, each member must also face his personal pain and the grayscale of human nature. The whole book is composed of ten volumes, with multiple story lines intertwined with each other. The cases and growth progress together, and finally converge into the climax of the final chapter.
