Movie Info | Most Pooh

She's on Duty

A boisterous detective goes undercover in a high school in order to befriend the teenage daughter of a notorious gangster.

Chun Jae-in, undercover cop

Kang No-young, boy at school, Jae-in's neighbour

Seung-Hee, daughter of mob boss

Detective Kang

Detective Chun, Jae-in's uncle and boss

Jo Hye-ryung

Bae Doo-Sang, mob boss of the Whacker gang

So-young, girl in class who wants Jae-in's protection

Class teacher

Cha Young-Jae, second mob boss, Seung-Hee's father

Detective Cho

cameo

Math Teacher (cameo)

Ja-gyeong