Jonghyun and Kibum were bestfriends since birth. When Kibum needs to move in America, Kibum and Jonghyun made a promise to each other. What if suddenly, Kibum can't remember those promises? What if Kibum changed from the innocent boy he was before to the most rebellious person he is now? What can Jonghyun do? What will be the result of this long time search?