He is the new star of the Criminal Investigation Brigade, Chen Mo. His appearance and talent are eye-catching, but he fell into the abyss when he was just starting out. A serial murder case enveloped City A like a dark cloud. The victim is hung upside down in the shadows, presented in a strange ritual, like a sacrifice. The only clue at the scene is a hand-drawn moth - is it the murderer's signature or a silent accusation from the deceased?
She is the bright moon of the forensic center, Su Xiao, calm and rational, synonymous with corpse whisperers. When they reunited at the bloody scene, the tacit understanding of the former alumni flowed silently. Her scalpel interprets death, and his insight pursues the truth. In fighting side by side every night, the boundaries of reason begin to blur, and secret emotions shine through despair.
However, the truth is far more sinister than it appears. Love killing? Vendetta? Addicted to murder? Every seemingly reasonable inference was ruthlessly overturned by new evidence. When Chen Mo cleared away the fog and thought he had hit the core, he found that he was stepping into a darker trap - a case within a case, a spy within a spy. The murderer used the third murder to orchestrate a perfect frame-up drama for them.
When you stare into the abyss, the abyss looks back.
When trust becomes a luxury, the only thing he can rely on is the woman behind him who understands all death signals.
This time, what they are looking for is not only a cold-blooded killer, but also a behind-the-scenes director who plays tricks on them. And behind all this, a tragedy and secret that has been sealed for thirty years are waiting for moths soaked in blood to break out of their cocoons.
