She's on Duty

The film deals with a boisterous undercover female cop who gets sent to a high school in order to get close to a criminal in hideout by befriending his teenage daughter. The general set up and the fighting antics of the female cop play close resemblance to Stephen Chow's classic Fight Back to School.

She's on Duty is a 2005 crime romance movie directed by K.C. Park, starring Kim Seon-a, Gong Yoo, Nam Sang-mi. It holds an IMDb rating of 6.2/10 from 1,166 votes and runs 1h 51m.