Su Yan is the "Iceberg Forensic Doctor" of the provincial department. He can read the time of death from the light blue lines on the corpse spots, but he cannot read the smile in Lu Xun's eyes. Lu Xun is the "wild detective" of the city bureau. He can identify a suspect with a cigarette butt, but he cannot deal with the "Queen of the Anatomy Table".
A series of forensic murder cases tied the two of them: she removed the body's internal organs with a cold face, and he came over to hand over hot coffee; she stayed up late reading the case files in the morgue, and he stood guard against the door frame until dawn. Until the attack in the basement, Lu Xunqiang pushed her into the ventilation duct, and she put a scalpel against his waist with her backhand: "If I touch him again, I will dissect you."
The pursuit of the "Eye Tattoo Man" is getting closer and closer, and the secret of hallucinogens comes to light - Su's father's "suicide" ten years ago was actually due to the discovery that evidence had been tampered with. Lu Xun's cynicism gradually faded away, revealing his scars: "I was your father's informant back then." Su Yan's scalpel trembled slightly, feeling the weight of people's hearts for the first time outside of the corpse. When the black hand behind the silver badge reaches out to them, will the scalpel protect him or the handcuffs protect her?