Gina, who has a mediocre talent, but is forced to play the violin as the only daughter of a big company.Kyung-mi, who had a genius talent, but was born as the daughter of a poor chauffeur and gave up on playing the piano.As Kyung-mi's father works as a driver for Gina's family, the two meet and get closer through the link of music.Three years of puberty with music, they feel friendship and gradually love.