At the C‘est Si Bon Music Hall that every folk band aspires to play at, country boy Geun Tae meets fellow young musicians Hyung Joo and Chang Sik. Both friends and rivals, the three team up to form the C‘est Si Bon Trio and create music that will come to define a generation. Aspiring actress Ja Young waltzes into the hall and their lives, becoming their muse and the object of their affections. Just as the trio‘s music takes off, so too does Ja Young‘s acting career, bringing great changes to her relationship with Geun Tae and to their music.