In the late 1960's, C'est Si Bon is the music bar where every acoustic band's dream lies, and Korea's leading folksongs were born. It is where Geun-tae (Jung Woo), the naïve country boy met the young musical prodigies Hyung-joo and Chang-sik, and formed the band named after – the C'est Si Bon Trio. As the three young artists bicker over their music, beautiful socialite Ja-young (Han Hyo-joo) enters the picture and becomes their muse, and a series of moving love songs comes from it.