Gong Chul Soo is met with a fight in the hall during his first day on the job. The investigation team starts looking into a fire that appears to be arson.

A model is investigated after an insurance company questions the debilitating injury to her legs. Joo Kang Lee carefully reviews files that contain conflicting information for a recently deceased person.

Joo Kang Lee tells Chul Soo that the stories about Chan Ho are true. Chan Ho and Chul Soo talk to a man who is claiming to be Yi Tae Soon.

A group of criminals arrive at the investigation team's office and try to settle. The team goes out to question anyone who might have known Na Young before her death.

Chan Ho puts Chul Soo in charge of locating a wrong way driver. Investigators in the parking garage case find out the police have taken all surveillance tapes and the security guard has been fired.

A medical related investigation becomes Chul Soo's first solo case since he was added to the team. Case files lead Chul Soo and Joo Kang Lee to a transplant doctor named Soo Ho.