Rin Kim has invited Seo Ri to come to Berlin, Germany and attend the music school she is currently in. Although Seo Ri is in a dilemma, the people around her tell her that this is a once-in-a-lifetime chance that she should not let go of. Furthermore, even Woo Jin tells her not to worry about him. The day of Seo Ri’s departure, Woo Jin comes back home and feels Seo RI’s vacancy. In his room, he finds a letter written by her to him and reads it. (thetvdb.com)