Nam Sang-mi

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

The plot of this film has a young beautiful spy from North Korea going south to capture another rogue spy. She goes undercover at Burger King and soon she's battling with her co-workers for the affections of the local boys, dealing with a culture clash between North and South, and a very cute young man who's posted pictures of her on a website of local "angels" possibly blowing her cover.

Min Ji-Won (Kim Ha-Neul) suffers from amnesia caused by an accident almost a year ago. After the accident, Min Ji-Won is a shy person. Prior to the accident, Min Ji-Won was the leader of a gang of four girl bullies. Through pictures, Min Ji-Won learns about the three other members and she wants to learn what happened to them. While Min Ji-Won attempts to unravel the mystery, her former friends are killed one by one...