You had your life planned out for you ever since you were a little girl. However, when your friend, Baekhyun, takes you with him to his old hangout, you meet someone, someone you were willing to risk your parents’ criticism to be with. His name was Oh Sehun. But, in the end, what you really should have asked yourself, was if Sehun was ready to face your parents…

Before leaving on his schedule overseas, Seongwu pens a series of letters to his girlfriend. What are their contents? He writes of events throughout their relationship that he wants her to look back on and remember. But on the last day, after she reads the last letter, what possible surprise could he have in store for her?