Synopsis
Lee Shin is a university student majoring in modern music. He is also the vocalist and guitarist of the band "The Stupid." Shin is known for his good looks and strong passion for music, but in reality he is cold, lacks interest in anything unrelated to music and has neither dreams nor plans for the future. He initially likes Jung Yoon Soo, a dance professor at university, but this all changes when he meets Lee Kyu Won.

Lee Kyu Won is a bright and outgoing student who was born into a prestigious family and is majoring in traditional Korean instruments, especially the gayageum. Kyu Won's grandfather, Lee Dong Gun, is one of the top 3 traditional musicians of his age and his biggest wish is to see his granddaughter become a traditional music prodigy. Trying to live up to her grandfather's expectations, Kyu Won immerses herself in training and becomes a university student who knows nothing outside of her studies. As her friends are fans of "The Stupid", she was forced to go to the band's concert with them. There she saw Lee Shin performing live, and is immediately captivated by him.

 Cast
Jung Yong Hwa as Lee Shin
Park Shin Hye as Lee Kyu Won
Song Chang Ui as Kim Suk Hyun
So Yi Hyun as Jung Yoon Soo
Woo Ri as Han Hee Joo
Kang Min Hyuk as Yeo Joon Hee
Lee Hyun Jin as Hyun Ki Young
Im Se Mi as Cha Bo Woon

Extended Cast
    Lee Jung Hun as Im Tae Joon
    Jung Kyung Ho as Goo Jung Eun
    Jang Seo Won as Lee Soo Myung
    Shin Goo as Lee Dong Jin
    Sun Woo Jae Duk as Lee Sun Ki
    Lee Il Hwa as Song Ji Young
    Moon Ga Young as Lee Jung Hyun
    Kim Sun Kyung