31-year-old single woman Kim Ji-su once wanted to become a famous pianist like Horowitz. Her dream was shattered but she went on by teaching children piano. One day, she discovers a young musical genius, and begins giviving intensive lessons to prepare him for competition. However, while it doesn't turn out, Ji-su is shocked when she realizes that the boy carries a secret that will change her life forever.
Uhm Jung-hwa
Kim Ji-su
Sin Ee-Jae
Yoon Gyung-min
Park Yong-woo
Shim Kwang-ho
Choi Sun-ja
Gyung-min's grandmother
Jeong In-gi
Ji-soo's older brother
Kim Bo-ra
Min-hee
Kim Hee-jung
Jeon Kong-ja's mother
Yoo Ji-yeon
5th performer (uncredited)
