這是一部具有beginagain風格的音樂電影，故事講述女主角在克服色聽癥后完成屬于自己的音樂。Si-hyunlosesallhermemoryafteracaraccidentandliveswithJi-wonatherplace,heronlyfriendwhomshemetatthehospital.Si-hyunonlyknowsthatshehascoloredhearinginwhichshecanseesoundsincolors,andthatshehearsanuncertainmelodyinherdreameverynight.Wearyoffaintingattheslightestnoise,shealwayswearsasetofheadphonesasbigasherface.Thenoneday,Ji-won’syoungerbrotherWoo-hyuk,whoissecretlyinlovewithSi-hyun,hearshersinganunfamiliarmelodyinhersleep.HewritesdownthemelodyonascoreandgivesittoSi-hyunasagift.Meanwhile,Jee-il,awashed-upcomposerchancesuponthisscoreandoffersSi-hyuntofindthemelodyinherdreams.Asthesongnearscompletion,Si-hyun’sfragmentedmemoriesreturntoher....