Cinematography
Composer
Editor
Producer
Screenwriter & Director
Main Role
- Park Seo Joon Main Role
- Kang Ha Neul Main Role
Support Role
- Sung Dong IlProfessor YangSupport Role
- Park Ha SunJoo HeeSupport Role
- Lee Ho JungLee Yoon JungSupport Role
- Go JunYoung choonSupport Role
- Bae Yoo RamJae HoSupport Role
- Lee Joo WonSergeant ParkSupport Role
- Choi Kwang Won[Police academy student]Support Role
- Choi Ji Min[Police force alumni]Support Role
- Han Seung Yoon[Police academy training group]Support Role
- Cha Shi Won[Cadet at police academy]Support Role
- Jo JoonGoon HoSupport Role
- Jung Da EunHyo Jin [Runaway girl]Support Role
- Kim Na In[Young Choon's gang]Support Role
- Jo Hyun Im[OB-GYN Dept, Cleaner]Support Role
- Shin An JinProfessor Shin of disciplinary committeeSupport Role
- Jeon Geum Han[Police uniform tailor]Support Role
- Oh Yun Gun[Police Academy student]Support Role
- Jung Dong Hoon[Police Officer]Support Role
Guest Role
- Lee Joon HyukProfessor HaGuest Role
- Choi Hong Il[Hee Yeol's father]Guest Role
- Seo Jung Yeon[Ki Joon's Mother]Guest Role
- Byeon Woo Seok[Club Entertainer]Guest Role
- Kwon Yoo Na[Ye-jin's older sister]Guest Role
- Cho Seong Gu[Police academy student]Guest Role
- Jin Seok Jin[Police officer graduate]Guest Role
- Lee Soo InSoo In [Club Woman]Guest Role
- Lee Seung HeeGeon Yeong [Runaway high school girl middleman ]Guest Role
- Hong Seong O[Young Choon's gang member]Guest Role
- Tae Yoon[Police academy student]Guest Role
- Jang Yong Hee[Police academy cadet]Guest Role
- Jeon Jun Young[Cadet @ police academy]Guest Role
Bit part
- Ahn Sung Bong[Club prayer]Bit part
- Go Deok Soon[Tteolbokki restaurant boss]Bit part
- Lee Do Hyun[Taxi driver]Bit part
- Ryu Kyung Soo[Police academy conscripted policeman]Bit part
- Lee Kyu Sung[Police academy student]Bit part
- Jung Eui Soon[Tteolbokki restaurant boss]Bit part
- Choi Yo HanDisciplinary committee professor ChooBit part
- Park Jae Hong[Police academy instructor]Bit part
- Oh Sang Joon[Seung Min's father]Bit part
- Kang Min Tae Bit part
- Woo Sang Ki Bit part
- Park Sang Min[Police force alumni]Bit part
- Kim Jung Hoon[Police Academy student]Bit part
- Hong Joon Pyo[Gangnam police station sergeant]Bit part
- Lee Soo Jin[Police force alumni]Bit part
- Kim Kyu Baek[Gang member]Bit part
- Bae Han Yong[CEO]Bit part
- Shin Jae Min[Police alumni]Bit part
- Kim Jung Sub[Ethnic Korean living in China]Bit part
- Lee Se HeeSe Hee [Club woman]Bit part
- Oh Yoo JinEun Mi [Runaway high school girl]Bit part
- Im Hyun Chul[Gangnam Police Station guard]Bit part
- Lee Ru Tam[Police force alumni]Bit part
- Lee A In[Kidnapped girl]Bit part
- Kim Young Ah[Sterile woman]Bit part
- Lee Eun Saem[Kidnapped high school girl Eun Sam]Bit part
- Ha Dae Yong[Police forces alumni]Bit part
- Hwang Chan SungHwang Chan SungBit part
- Ji Chan[convenience store customer]Bit part
- Jung Yoo Ha[Clubber]Bit part
- Kim Min SongKorean-Chinese Chung GangBit part
- Kim Hyung Suk[Police academy student]Bit part
- Seo Ji Won[Control center agent #2]Bit part
- Lee Woo Sung[Police academy student]Bit part
- Lee Won Hee[Police academy student]Bit part
- Lee Da InDa In [Club woman]Bit part
- Choi Chung Ja[Tteolbokki restaurant boss]Bit part
- Lee Kang Jae[Police academy student]Bit part
- Han Ji Won[Female student]Bit part
- Kim Kang HyunTeam Leader Kim [Gangnam police station ]Bit part
- Kim Ki BumPolice academy training groupBit part
- Kim Eun Kyung[Tteolbokki restaurant boss]Bit part
- Kim Ji Tae Bit part
- Im Ji Hyung[Police academy classmate]Bit part
- Lee Da Yeong[Cadet at police academy]Bit part
- Ko Joo Yeon[Kidnapped girl]Bit part
- Han Dong HeeHan Soon KyungBit part
- Park Do Yi[Clubber]Bit part
Unknown
- Go Soo Hyun Unknown
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