PLOT :

Yoona and Siwon are Childhood Friends . They know many things about each other . They likes each other secretly . One Day , Siwon have to leave her with his family . Siwon and Yoona are not the same .Siwon is from rich family while Yoona is from Poor Family.Even if they are not having the same status in life , they don't care . Siwon leaved her with a Promise that he will back for her . AFTER 10 YEARS , Siwon arrived in South Korea to continue his education . He was very excited to saw Yoona as a beautiful , grown up woman . 

He didn't see her there because she already changed residence . They meet each other in school because Yoona got scholarship to study in a Private School because she is Smart . When Siwon saw her , He was very very happy but she already changed . She don't believe him now . She thinks he was a liar who make her wait for 10 years .

WHAT WILL HAPPEN TO THEIR LOVE STORY ?