21-year-old Oh Je-ro is a musical genius, but in order to support his sick father, he's worked for years at a piano factory as a tuner.

He despairs of ever being given a chance to learn how to play the piano, and thinks the name his father gave him sounds like "Oh, Zero," signifying his lack of hope in the future.

This changes when he meets and falls in love with Yoon In-sa, a 30-year-old music teacher in a school.

A piano will bring these two souls together, as they share their dreams, hopes, pain and eventually heal each other.

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