Cast: Don Lee, Kim Moo Yul, Park Ji Hwan, Lee Dong Hwi
Director: Heo Myeong Haeng
Three years after the synthetic drug case roundup in Korea, beast cop Ma Seok-do and Metro Investigations are busy chasing down criminals who are dealing drugs through a delivery app, when the app distributor is found dead in the Philippines. The team soon realizes that this case involves a huge illegal online gambling business. Detective Ma reaches out to Jang I-su for help, and with support from the Cyber Investigations team, Metro Investigations begins to roundup some criminals…about voice phishing in exchange for revealing everything he knows.