Cho Sunhae is just a girl who have everything all girls ever wanted for their lives. Parents who cared for her, a handsome bestfriend named Kim Jaejoong, who always be there for her who soon turned out to be her boyfriend.    

  Why can't I forget about it?   Why can't I just let it pass like it should be?   Why I have to keep bad dreaming about you?   Past, first love, why is it too hard to forget?     *********   Sunhae and Hyelim along with Nielle are bestfriend.