Pieces of dead bodies are found everywhere around Seoul, and Korea is horrified. To solve the case, profiler Min Jiyul takes charge, while Han Jinu comes back to his job.

A new hint of the suspect is revealed as a new victim arises. Subsequently, the team look into the other victims' medical records to discover the truth behind this case.

The suspect who claims to have killed a middle aged woman is impossible to commit a crime due to his rare disease. However, soon the relationship between the victim and her son is revealed, and the truth is unveiled.

A person dies in a theme park due to assault, but the suspect remains mysterious. Meanwhile, Jinu's first love Yeongeun's body is forcefully taken away by somebody even before autopsy.

A man falls down from his apartment, but it cannot be suicide. Min Jiyul is suspicious of the victim's wife, hence she investigates based around the wife.

A kidnapper keeps a civilian hostage, but soon dies at the scene. Jinu feels something strange and stops the autopsy, and soon finds out the horrible truth behind this case.