A story between you and the Boyfriend Twins. You love Kwangmin, Kwangmin doesn't know that you exist. Youngmin is your best friend but you don't take notice of his growing attraction to you.  Eventually Kwangmin starts to take notice of you and even ask to be your boyfriend but is there a twist behind it? You start to recieve letters, disturbing letters, threatening your life unless you leave the twins alone?  Is there someone you know behind this? Will you get hurt? Will the twins get hurt? You don't know but you do know that someone may die, the question is what will happen and who will it be?