'Monster Cop' Ma Seok-do investigates an illegal online gambling business led by a former STS Baek and an IT genius CEO Chang. Ma proposes an unexpected alliance to Jang and begins hunting down the criminals.
Ma Seok-do
Baek Chang-gi
Jang I-soo
Jang Dong-cheol
Han Ji-su
Jang Tae-su
Kim Man-jae
Yang Jong-su
Jung Da-wit
Kang Nam-su
Kwon
Jo Ji-hoon
Ahn
Lee
Cho Sung-jae
Choi Yoo-sung
Jason
Salesman
Li Sang-yong
Commissioner General
Jin Yeon-ho
Kim Jin-sook
Sung-jae's mother
Detective
Detective
Hotel staff
Casino manager
Funeral director
Investor
Gatekeeper
Drug Underling
Detective
Detective
Yellow-hair
Drug
Funeral service
Jang I-soo's Girlfriend 1
Sashimi Restaurant Employee 2
