Plot:

Jin Yoo Jin is a rich young man who has no interest on business, the only thing that he likes is music which his parents disapprove. While attending a formal party with his parent he met a girl with such an angelic voice but also with not so angelic strength. She was able to almost break his hand and legs, when he sneakily approached her which startles her. Then he used this to threaten her to join him band that sings on the street, and become their female vocals. Will she agree or not?