An ambitious thirty something musical director takes part as a mentor for a musical project. Through an audition they are trying to cast an actor to play King Jungjo. The musical director picks a boy named Young-Kwang through a blind test involving listening to just his singing. The musical director is surprised to learn that the young boy is a Filipino-Korean boy. The director becomes impressed by the boy's passion for music and also his family history. The boy is cast for the character of Yoo Il-Han. The director first uses the boy for his own success, but later changes his ways ...