After ruining a sting operation which might have apprehended a top-ranking South Korean criminal named "Cha Young-jae" (Kap-su Kim), a female detective named "Chung Jae-in" (Seon-a Kim) is subsequently assigned a mission in which she has to keep tabs on the criminal's daughter, "Seung-hee" (Sang-mi Nam). This requires her to go undercover--as a high school student. Not only that but she has to somehow make friends with Seung-hee and at the same time try to fit in. Neither of these are very easy. Now rather than reveal any more of this movie and risk spoiling it I will just say that in order for this particular type of film to work it typically has to have some really good comedy to back it up. That being said, while there is certainly some comedy here, I didn't see anything special about any of it. Even so it wasn't too bad for the most part and as a result I suppose it was worth the time spent to watch it. Accordingly, I rate it as about average. But no more and no less.

She's on Duty is a South Korean film about a police detective who goes undercover in a high school to befriend the daughter of an elusive gangster.It stars Kim Seon-ah, Nam Sang-mi, Gong Yoo, Kim Kap-su and Kim Sang-ho.It was written by Jeong Yong-Ki and Won-jae Lee and it was directed by Park Kwang-Chun.In the movie,Detective Chun Jae In thinks that she is about to break a huge child prostitution ring, but when she finds that she has really ruined a much higher-level undercover operation, she is embarrassed and humiliated. Despite this, an important new mission arises that requires her unique talents – i.e. her ability to dress up and convince as a school-girl. She must go undercover once again, this time in a school, under the pretense of being a new student so that she can ensure the safety of the daughter of an important Mafia witness that the police want to locate. Before long she finds her maths skills challenged, her fighting skills honed on the school bullies and her heart melted by a fellow student. It was an average film.The story is definitely far from realistic.The acting was decent.But overall,it provides great laughs and pure entertainment.Nothing more.

Dressed as a schoolgirl, Detective Chun Jane, surrounded by Korean prostitutes, goes undercover to stop Hammer, a member of the Korean mafia who traffics women to the yakuza. When the yakuza arrives, Jane attacks the mafia members and almost beats up every one of them on her own. However, after Hammer is caught, the yakuza turns out to be another detective who blames Jane for destroying his plan to catch the real yakuza member. Being the spunky, hot-tempered fireplug that she is, Jane does not take these words lightly and becomes quite antagonistic towards Detective Cho.Later, the heads of the police department are trying to find the location of Cha Young-jae, Bae Doo-sang's, the leader of the suspected human trafficking scandal, right hand man. Cha had been willing to testify against him, but after an attack Cha quickly fled the scene. In order to find Cha, the head of police decides that Cha's daughter Seung-hee needs to be followed because surely her father will try to contact her. Soon afterwards, after seeing Jane still dressed in her school uniform, the head decides that Jane will attend the school as a student and keep a close eye on Seung-hee. Jane of course dislikes the idea, she is thirty and hated high school, and demands that she should be a teacher instead of a student, but her uncle, who is also her ranking officer, basically says that she is such an idiot that there is no way that she could teach a class. So, against her will, an angry, spunky woman is sent back to school.Always a bit hostile, Jane soon unleashes her fury upon a girl gang and later a group of boys hired by said girl gang. She is constantly in trouble with her P.E. teacher who seems to view her as some type of social deviant, and she has a number of misunderstandings with other girls. However, she is eventually able to find a comfortable position at the school, but when she finally accomplishes this Detective Cho goes undercover at the same school.She's on Duty is a decent film. It takes an old and tired theme and adds new life to it. This is mainly accomplished through the acting of Kim Seon-a who is probably best known for her work on the drama series My Name is Kim-sun. Kim is a spunky and very cute woman who looks twenty instead of thirty and her high energy and exaggerated movements make for an enjoyable film watching experience. However, outside of Kim's performance this film leaves a lot to be desired. There are revelations that can be seen a mile away and some scenes are quite mawkish, but overall She's on Duty is not too bad and it is at least good enough to tickle your funny bone once or twice.

This movie seems more like a pilot episode for a TV-show than a regular film, although I don't know weather or not this is actually the case. The story is not that complicated and the telling of it offers no surprises. The actors generally do a good job, but the only one who stands out is Kong Yu as Kang No-Young who was thankfully given a more understated roll than the leading actress Kim Seon-a (as Chun Jae-in). Perhaps it is simply the contrast of his character against the rest of the film, but something about him caught attention (and I'm not talking about his good looks, although there certainly is no lack of that either) and held it in every scene. Given the chance I would definitely watch him in another movie. This is a movie to watch when you are in the mood for something light and easily chewed, and you really, really don't feel too analytical or criticizing... It does have some darker sides to it, but nothing that will spoil the general cheerfulness. If this came on TV (fat chance... *SIGH*) I'd watch it again, but I wouldn't spend money on it - nor would I recommend anyone else to do so.