Seo In Hwa is a bar hostess whose main goal is to seek revenge on the rich, corrupt men who hurt her.

Oh Je Ro is a musical genius who had always dreamt of learning the piano, but had to work in a piano factory as tuner instead of going to school in order to support his sick father. He had despaired of ever being given a chance to learn and thought the name his father gave him sounded like "Oh, Zero", signifying his lack of hope in the future. This changes when he meets an elementary school teacher, Yoon In Sa, and begins a delicate love story with her.

Lee Ma Ri is a famous actress that is actively pursued by four men. The four men come from different backgrounds and have different aspirations. One is a literature graduate student who dreams of becoming a writer, another is a famous photographer, the third is the heir to a major chaebol family, and the last man chasing after Ma Ri is a young executive who works at a media corporation.