It's all about Mr Choi, average worker, bedecked in blue 'n white check shirt, a working class hero, non university background, diligent, practical, grumpy in the extreme, but ingenious - that sets him apart from the rest of the Korean Big Corporation workmates. What I love about this series is how much it draws you into the office politics that exist in every large company. The story has been wrought with considerable skill to keep things fuming, with more than one unexpected twist. For anyone interested it is a very recommendable show to watch, with good English subtitles. My first"9" ever!