Someone causes a narcotics unit detective to become addicted to drugs. What is the connection between them?
as Jang Jae-gyeong
as Oh Yoon-jin
as Park Joon-Seo (teen)
as Park Tae-jin
as Won Jong-soo
as Kim U-sung
as Choi Ji-yeon
as Heo Joo-song
as Park Jun-seo
as Oh Soo-hyun
as Kim Chang-soo
as Oh Chi-hyeon
as Jung Yoon-ho
as Young Jang Jae-gyeong
as Young Oh Yoon-jin
as Jung Sang-eui
as Gong Jin-wook
as Kang Si-jung
as Yoo Gyeong-hwan
as Jung Yeon-joo
as Won Chang-ho
as Min Hyeon-woo
