??-Behind my smile there's the truth untold..that you would never understand.. ??-yo-u ar-e hu-rtin-g m-e..pl-plz leav-leave me.. There is a story of two different people who never meant to each other..not even know each other.. a girl who is a professor at Seoul international University..will fall in love with a boy who had a dark past..? a boy who is obsessed with her..not even in love.. what he will do..let's see....