Two apathetic police academy recruits who become best buddies through the tough training together witness a woman being abducted right before their very eyes. As they were taught in the academy, they quickly report the incident to the police, but the police are in no hurry to jump on the case. So the duo decide to take the matter into their own hands and rescue the woman.

Voice-actress Dong-joo has a terrible weakness: she sings horribly. Yet in an effort to win the heart of her old high-school crush, she agrees to sing solo in a wedding. It falls on voice coach Shin-hong to help her, or die trying.