Lee Shin is a university student majoring in Western 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. He initially likes Jung Yoon Soo, a dance professor at the university, but this all changes when he meets Lee Gyu Won.
Lee Gyu Won is a bright and outgoing student who was born into a prestigious family and is majoring in Traditional Korean Music, her instrument being 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 practising and becomes a university student who knows nothing much 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.
We then have Yeo Joon Hee, a bumbling, shy and ever hungry boy who doesn't act his age. He has a complete "Hannah Montana" personality, shaggy idiot by day, Stupid's ultra hot leader drummer by night. During one of his shaggy phases during the day, he comes across University Princess and chairman's daughter, Han Hee Joo, who he immediately falls head over heels for, calling her his "Natasha." However, there are dark sides to Hee Joo's personality than his naïvety knows, and in the series, he fights between his ever-growing feelings for Hee Joo and helping his friends as she threatens their university lives.
From the drama You're beautiful Shin woo or better known as JUNG YONG HWA member of the group C.N BLUE
and together with Go Mi Nam whose from the You're beautiful co-star.
JUNG YONG HWA as LEE SHIN
PARK SHIN-HYE as LEE GYU WON