Sooyoung forced her boyfriend to do the famous Gwiyomi. She know that her boyfriend, Park Hyung Seok, is not fond with it.  But, She thought, Why not? Maybe, He can do it for her.  He don't like doing such aegyos. Hyung Seok keeps rejecting her from doing that.  And that made Sooyoung frustrated and ends up locking herself in her room. That made Hyung Seok feel guilt. What will Hyung Seok do to make her girlfriend not to be frustrated?