Teach You a Lesson
2026 · Action & adventure · Drama
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TV series / 2022
Insider
Episode directors
Min Yeon-hong
When a judicial apprentice goes behind bars while on an undercover job, he plays the hand he’s dealt to survive prison and get his payback.
The story
When a judicial apprentice goes behind bars while on an undercover job, he plays the hand he’s dealt to survive prison and get his payback.
The seasons
Season 1
Season 1
Season details
When a judicial apprentice goes behind bars while on an undercover job, he uses his instincts to survive and get revenge.
Cast
Kang Ha-neulKim Yo-han
Lee You-youngOh Soo-yeon
Heo Sung-taeYoon Byung-wook
Kim Sang-hoMok Jin-hyung
Kang Young-sukJang Seon-oh
Park Seong-geunHong Sang-wook
Kang Shin-hyoHong Jae-seon
Jeong Man-sikYang Hwa
Kim Si-eunPark Ro-sa
Sung Ji-ruHeo Sang-soo
Cha YeobKim Gil-sang
Yoon Byung-heeKim Woo-sang
See more cast
Lee Dong-won[Seongju Prison inmate #1321]
Moon Sung-keunDo Won Bong [Seongju Prison inmate]
Heo Dong-wonYang Jun ['Skin Nation' chairman]
Choi Dae-hoonNo Seung Hwan / Nam Dae Moon [Seongju Prison inmate]
Han Jae-yeongJo Hae Do [Bukyeongpa gang]
Oh Tae-kyungWoo Sang Ki [Goldman Casino's accountant / Min Ho's father]
Choi Mu-sungSong Doo Cheol [Bukyeongpa gang]
Han Kyu-wonEom Ik Soo [Bukyeongpa gang]
Jo Hee-bongRyu Tae Hoon [Seongju Prison inmate]
Lee Ha-yulKim Woo Jae [Prosecutor]
Kim Min-seungWoo Min Ho [Sang Ki's son]
Yoo Ha-bokKim Jung Gyu [Prosecutor]
Kim Byung-cheol[Sinseondong elder]
Seo Myung-chan[Sinseondong elder]
Lee Yang-hee[Sinseondong elder]
Moon Jong-wonKim Sung Bum [Seongju Prison staff]
Park Joong-geunPark [Seongju Prison guard]
Kim Kyu-baek[Seongju Prison inmate #1369]
Hwang Dae-woong[Seongju Prison inmate #8934]
Kim Ji-naDirector Jin Soo-min
Yoo Jae-myungNoh Young Gook [Prosecutor]
Ye Su-jeongShin Dal Soo [Yo Han's grandma]
Min Dae-sik[Priest]
Lee Shi WooJang Seon Oh [Teen]
Hong Seo-junGu Bon Cheol [Lawyer]
Kim Jin-gu[Team leader]
Fan BingbingMs. Lam
Lee Dong-kyu[Anchorman]
Choi Mu-in[Team leader]
Kim Gwi-seonChairman Suh
Sung Ki-yoonCha Seok Hong [CEO]
Na Ho-won[VIP poker player]
Lee Tae-ho[Ms. Lam's bodyguard]
Jung Ja-young[Bereaved man]
Kwon Ju-young[Ms. Lam's bodyguard]
Jung Yong-ju[Hacker]
Choi Nam-wook[Scrapyard man]
Oh Yu-naDealer (Eps 1, 3)
Kang Hak-soo[Prosecutor's Office Admin Support staff]
Song Jae-heeKim Tae Soo [Yo Han's father]
Bae Yong-geun[Detective]
Choi Seung-Il[Prosecutor]
Kim Eung-soo[Prosecutor]
Jung Woong-in[Chaebol man]
Lee Chae-kyung[Young Gook's wife]
Han Sung-sooLee Tae Gwang [Seongju Prison inmate]
Lee Young-suk[Monk]
Kim In-woo[Yakuza boss]
Richard Kim[University dean]
Lee Moo-nyoung[Seongju Prison guard]
Sun Yul-woo[Seongju Prison inmate]
Park So-yoon[Motel worker]
Kim Han-sang[Camera store owner]
Kim Joon-hyung[Seongju Prison guard]
Moon Ho-jinOh Jong Hoon
Kim Jae-il[Poker player]
Lee Jung-hyun[Poker player]
Jang Jae-kwon[Attorney]
Min Eung-sik[Introducer]
Son Kyoung-wonShim Jae Chul [Seongju Prison warden]
Park Gyu-been[Min Ho's friend]
Lee Keon-gu[Jae Sun's subordinate]
Kim Jong Ho[Corrections administrator]
Han Bo-reumAnnie Stevens [Macau Triads]
Kang Jung Goo[Soo Yeon's associate]
Um Chae-youngOh Soo Yeon [Young]
Jung Chung-guKim Jin Yong [Attorney]
Kim Won-suk[Attorney]
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