A talented martial artist who can't walk past a person in need unites with a probation officer to fight and prevent crime as a martial arts officer.
Top Billed Cast
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Kim Woo-bin
Lee Jung-do
Kim Sung-kyun
Kim Sun-min
Lee Hyun-gul
Kang Ki-jung
Park Ji-yeol
Cho Min-jo
Lee Jung-ok
Han Byung-soon
Kim Yo-han
Moisture
Kang Hyung-suk
Writer K
CW
Cha Wang-hyeon
Earthworm
Lee Hae-yeong
Lee Sang-woo
Media
![Official Trailer [ENG SUB]](https://i.ytimg.com/vi/WNkGz6aKFvk/hqdefault.jpg)
![Official Teaser [ENG SUB]](https://i.ytimg.com/vi/7Zw-qPlydTI/hqdefault.jpg)
![Newbie officer hasn't memorized the Miranda warning yet [ENG SUB]](https://i.ytimg.com/vi/BwLN7SnjLz0/hqdefault.jpg)
![Kim Woo-bin follows the ankle tag signal [ENG SUB]](https://i.ytimg.com/vi/O3VbqLp0IOM/hqdefault.jpg)
![Kim Woo-bin is ambushed by a group of thugs [ENG SUB]](https://i.ytimg.com/vi/uCeIHmWYTFs/hqdefault.jpg)
![Exclusive Preview - Excited new officer gets his first ex-con [ENG SUB]](https://i.ytimg.com/vi/qqc_0yDHDkk/hqdefault.jpg)
![Inside Look with Kim Woo-bin [ENG SUB]](https://i.ytimg.com/vi/2yHfsgylQbQ/hqdefault.jpg)
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