Yoo Ah-in
Oh Hye-won (Kim Hee-ae) is a 40-year-old woman who feels that she's leading a fulfilling life. Elegant, sophisticated and excellent at dealing with people, she spares no effort in her quest for success as the director of planning for the Seohan Arts Foundation. But then she meets Lee Sun-jae (Yoo Ah-in), a 20-year-old genius pianist from an impoverished background, who is unaware of his ability and works as a quick delivery guy. Hye-won experiences for the first time what truly falling in love is like, and she and Sun-jae begin a passionate affair which they must keep secret because it threatens to unravel both their lives.