I don't usually have time to watch movies, but when I do, I somehow manage to find really really really good ones~ I've been wanting to see this movie ever since it was first released in June of last year. And I was right, it was really worth watching. I laughed and cried, and loved the characters~ That's all I can say... you'll have to watch to understand...
You can do so here:
http://www.dramago.com/korean-movie/secretly-greatly-2013 You can read about it here:
http://en.wikipedia.org/wiki/Secretly,_Greatly