Jay Park, the leader of the JTTL band and Nam Jihyun a girl with Leukemia are childhood bestfriends. They were separated for how many years and Jihyun, knowing that Jay's in the middle of spotlight already doesn't want to ruin her bestfriend's image. However when Jay found out about Jihyun's near death he did everything he could to make Jihyun happy. What would be the ending of the two childhood friends?