Under the seemingly peaceful city, mysterious cases occur frequently, and the police are helpless. Su Chen, a young man with the power of "spiritual echo", can perceive and reconstruct the spiritual imprints and emotional residues left by the past. He does not read minds, but "sees" the truth like a video being played back. In the murder case in the secret room, the murderer disappeared like a ghost, but he could not escape Su Chen's "echo". With his special powers, he restored key clues from the despair and pleasure frozen in the air, shocking the police. However, competence does not come without a price. Every time he goes back, the massive amount of information carries negative emotions, erodes his mind, and makes him suffer from mental pollution. From modern crimes to thousand-year-old mysteries of ancient desert tombs, Su Chen goes deeper and deeper to uncover the truth hidden by history. He discovered that the stability of human civilization was actually based on the forgotten "ancient existence". When he thought he had suppressed the resentment of the ancient tomb, he accidentally awakened a deeper crisis in the world. An extraordinary world hidden in the darkness was slowly unfolding towards him. Can he protect his own mind on the edge of truth and madness and reveal the world's ultimate secret? ·
