_____ is a 17 years old teenager. she was born in Korea but then left for US when she was 5. and when she's 10, she have to move to Japan. but when she came back to Korea when she's 17, she create a chaos among a popular group, UKISS. what she doesn't know is, Eli was her friend when she was still in US. 
she doesn't remember Eli at all. but _____ is the only person that Eli remember back in US. _____ felt like she already knows Eli for a long time a go. she tried to remember, but she couldn't. until one day she saw a picture of her in Eli's room. and everything came back to her like a lightning. but she knows that she's too late. Eli told her that he already have someone special in his heart. not knowing she's Eli special someone she tried to deny her feeling towards Eli.