Prosecutor Eun Sol gets as team a "no action man" with frequent stomach issues, and a "bear lady". Her first case involves a rich man,Oh-man Sang, who tries to get away calling to the trial the forensic examiner, Baek Boem, as witness.
Involving both Baek Boem and Stella Hwang further in the case, Eun Sol ends up by changing the charge from murder to aggravated assault. A mother with the child of a dead man seeks inheritance and comes to Eun Sol for help.
What seemed to be a simple fraud case turns into a homicide and lands the young prosecutor into hot water, with more and more people warning her to be wary of Baek Beom.
Because NFS makes public a result involving maggots within a current investigation, the race against time to locate the killer begins. The history between Baek Beom and Kang Hyun affects the investigation.
Eun Sol finds herself quarantined with Baek Beom as he is performing autopsy on a potential MERS patient. The rest of the team try to determine the cause of death in order to help them.
Kang Hyun blames Baek Beom for the death of his brother, the father of the unborn child of Baek's fiancee. The next autopsy case turns out to be the teenage son of one of the NFS' employees.
Baek Beom's analysis suggests Seong-jae's death could be a suicide. His father asks for a second opinion to disprove it. The investigation stirs the spirits of the influential parents of Seong Jae's colleagues.
Jeong-min Seo is found dead and Kang Hyun instantly spots similarities with his brother's passing. Assuming Beok is involved, he arrests him under the suspicion of murder.
The autopsy performed by a third party rules Seo's death as a suicide. The prosecutor's team continues to investigate and Baek volunteers to perform a second one on a damaged body, despite the risky potential homicide result.
Seo's killer is arrested and more circumstances surrounding Kang Hyul's brother's death come to light. Baek is cleared of his charges and Hyul resigns. An old man with two death certificates needs an autopsy.
The arrival of Do Ji-Han, the new prosecutor, and his team disrupts the usual working style. A young girl might turn out to be the latest victim of a serial killer that was active 30 years ago in Wooseong.
Recalling the last victim and the only witness to the serial killer to give testimony under hypnosis has terrible consequences. Baek researches the first victim with another autopsy and finds the murder weapon.
Beom finds out about his dad's involvement in the events from 10 years ago. A lawyer that worked in the first case of Sol for the defendant's team is found dead.
One year after Oh Man-sung's presumed death in a car accident, Beom is still trying to clarify the analysis of the data regarding the evidence. In court, Sol meets Kang Hyun as the lawyer of the defendant in her case.
A new Head Prosecutor appears to "deal" with cases, not necessarily "solve" them. Beom and team go to Incheon to perform urgent autopsies and find themselves under pressure from the local gangster to find missing drugs.
A husband and wife, married for one year, die in separate traffic accidents the same day. The time of death becomes of highest importance when it comes to deciding the inheritance between the two bereaved families.
The inheritance case developments implicate that one of the parties was murdered. Connections between the Prosecutor's Office and Chairman Oh become more and more apparent.
At the final settlement gathering, all parties with motive and circumstantial evidence as potential killers,find out the truth from the prosecutors. Someone who seems to be involved in all past major cases makes their presence more felt.
A killing spree with victims that share a lot of similarities makes everyone work around the clock, following traces and forcing the split of resources, with overwhelming amounts of evidence.
After Beom's team barges into a national level meeting of chiefs and officers, they explain the facts resulted in the autopsies and manage to make Sol re-focus on the issue at hand
Setback after setback, everyone's effort, including Jang Cheol's, reaches the girl - this exposes more and more of the protective attitudes of the Deputy and Head Prosecutor when it comes to important investigations.
Having another high profile case on their hands, with a schizophrenic suspected of matricide, the Head Prosecutor and Deputy Prosecutor are trying to gain favors with their superiors.
To take the credit and gain media popularity, without conclusive information from NFS, the Head Prosecutor jumps the gun and discloses the identity of the suspect, claiming the case is solved.
Under the Sungjin corp. pressure to cover tracks, the former Head Prosecutor asks for Doctor K's help to target the one conducting the special investigation on him. An emergency autopsy is asked from Beom.
Trying to prove the identity of Dr. K, Do Ji calls Beom's team to analyze an emergency analysis of his home, disregarding No's official decision to deny the warrant request.
As the research gets closer to revealing Dr. K's connection to Jang Cheol, the pressure on the high profile case of the celebrity increases so as to distract all the parties involvement.
