Episodes: 15
Jung Yong Hwa as Lee Shin
Park Shin Hye as Lee Gyu Won
Song Chang Ui as Kim Seok 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
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, cocky personality, and strong passion for music. Everyone sees him as a cold-hearted person, but he's actually soft inside. He lacks interest in anything unrelated to music and has neither dreams nor plans for the future.
Lee Gyu Won is a bright and outgoing student who was born into a prestigious family and is majoring in traditional Korean instruments, especially the gayageum. Gyu 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, Gyu 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.
Meanwhile, the University has hired a famous musical director, Seok Hyun to direct its big 100 year anniversary performance. However, he finds out that his ex girlfriend, Yoon Soo, a famous ballerina who left him to pursue her career, is also teaching at the school. Seok Hyun takes advantage of his position to direct a play which is based on his and Yoon Soo love story.