Shim Eun-seok, an elite judge with a cold and distant personality who is known for her dislike of juveniles, is appointed judge of a juvenile court in the Yeonhwa District. There, she breaks customs and administers her own ways of punishing the young offenders. Eun-seok has to deal with and balance her aversion to minor offenders with firm beliefs on justice and punishment as she tackles complex cases while discovering what being an adult truly means.

김혜수Sim Eun-seok

Kim Mu-yeolCha Tae-ju

Lee Sung-minKang Won-jung

Lee Jung-eunNa Geun-hee

Lee Sang-heeJoo Yeong-sil

Park Ji-yeonWoo Su-mi

Shin Jae-hwiSeo Beom

금광산Gyeong Jung-han

박종환Ko Gang-sik

Kim Young-ahHeo Chan-mi

Yoo Sung-jooSeok-yeol

Lee Joo-wonYun Ji-hu

Cho Mi-nyeoWoo Seol-ah

박옥출Baek Seong-u's mother

Hyun Bong-shikSeo Won-sik

김보영Choi Yeong-na

Yeom Hye-ranOh Seon-ja

Yoo Jae-myungEom Jun-gi

김준호Kang Sin-u

Choi Jung-wooChief Judge

송덕호Kwak Do-seok

이석형Lee Nam-gyeong

이봄O Gyu-sang's wife

Park Mi-HyeonKang Won-jung's wife

Lee Joo-shilSeo Yu-ri's grandma

전국향Namgung I-hwan's mother

Kim Joo-HunNamgung I-hwan

강채영Kang Seon-a

김도건Seo Dong-gyun

Kim Kyun-haBaek Do-hyeon

Lee YeonBaek Seong-u

황현정Han Ye-eun

심달기Seo Yu-ri

Jung Se-hyunHwang In-jun

Keisuke HoashiER Doctor / School District Court Judge / Legal Advisor / ...

최지수Oh Yeon-ji

정이주Kim Ah-reum

유주원Baek Do Hyeon (child)

김미지Nurse (Eps 3)

Ha-minCourt Judge (Eps 5)

김문찬[Nam Kyeong's father]