After meeting a friend from 20 years ago, Jae Gyeong gets abducted and becomes addicted to an unknown drug.

Jae Gyeong reunites with his friends from 20 years ago and finds them suspiciously linked to Jun Seo's death.

Jun Seo's body undergoes an autopsy, while Jae Gyeong and Yoon Jin dig deeper into Myung Guk's identity.

Jae Gyeong finds a lead in solving Jun Seo's death, and Yoon Jin discovers something shocking about Ji Yeon.

Someone tries to stop Jae Gyeong from investigating Jun Seo's death, but it doesn't stop him.

Jae Gyeong connects Lemon Mulberry to Jun Seo's death. With a lead, he goes undercover to meet the dealer.