Sooyoung is rich girl. She has everything that she wants and needs but all of a sudden with just a snap, everything changes. She got into an accident with her parents and because of that accident, she lost her parents. EVERYTHING actually... including her early childhood memories. BUT that didnt make her a loner.. Instead it made her a better person. She lerned to survive all by herself and also with some help of her friends. She has become a different person from what she used to be when she was a kid. When she was in an orphanage, she had a friend. That friend thought her how to stand up and fight. She made a promise with him that after 10 years, they would find each other and meet again.

After 10 years, she still hasnt forgot their promise. However,  while finding her childhood friend, she met someone and unexpecdtedly will fall in love with him.