_______ was a quiet, depressed girl who constantly gets abused by her adopted father. After her parents died when she was 7 she was sent to an orphanage. She never interacted with anyone, until a boy had the guts to speak to her.

Day by day, they talked, managing to break her shell. They never parted with each other, as she regained her old bubbly self. Until her new father adopted her, then they never made contact since.

Due to the beatings of her non-sober father, she want back to being unsocial girl. So quiet that that rumors passed saying she was a emo,depressed, sad.   No one liked her, nor did she like them. But, ignoring the cautions Park Chung-Hee  entered her life. They're relationship slowly, REALLY slowly, develop. But Mr. Chung-Hee had a very " Valuable" secret,  and soon decides  tells her.

(Now should we clarify Chung-Hee's secret----- His real name is Lee Sungmin, from Super Junior. He and s attend a high school by fake identities,given to them by their manager. )

After 3 years they soon decided to date.  But during the journey they'll encounter a tragic memory lost, a 5-year-old Mi Sun, a unfortunate love triangle, and Kyuhyun.