Si-hyun who lost all memory after a car accident and has colored hearing in which she can see sounds in colors, tries to complete the melody in her dreams. As the song nears completion, Si-hyun's fragmented memories return to her.
Sandara Park , Han Jae-suk , Cho Dong-in , Hong Ah-reum , Jo Dal-hwan , Yeseo , Bae Yong-geun
