Forensic doctor Qin Ming was urgently summoned to an abandoned apartment on a rainy night and found a female corpse that had been "perfectly dissected". The corpse was placed in a pose like a work of art, and the internal organs were removed but they were extremely clean, without any forensic traces.
- **Abnormal discovery**: Qin Ming found a folded note in the throat of the corpse with the word "First" written on it. He also noticed trace amounts of blue fibers in the nails of the deceased, which was inconsistent with the environment at the scene and became a key piece of evidence.
- **Serial Murder**: A second case using the same method occurred two weeks later. The deceased was a medical student, who was also "perfectly dissected". A "second" note was left at the scene. Qin Ming realized that he was facing a serial killer.
- **Escalation of provocation**: The murderer began to directly target Qin Ming, sending him anatomy tools and photos of victims, and even leaving traces in Qin Ming's home to show his understanding and surveillance of him.
- **Psychological Game**: During the investigation, Qin Ming found that all the victims were related to a medical accident, and he himself was also related to the matter, and gradually understood that the murderer was conducting some kind of "trial".
- **The truth is approaching**: Qin Ming narrowed down the scope of the suspect through trace physical evidence, but he did not know that the murderer had penetrated into his life circle, and an ultimate "anatomy" of him was being secretly prepared.
