Jang Geu Rae has played the game of Go since he was a child. When his plans of becoming a professional Go player fail, the down-and-out Geu Rae is forced to take an office job as an intern set up for him by an acquaintance’s recommendation for him to a large company called One International. On his first day of work, Geu Rae meets an eager fellow intern An Yeong Yi as they both try to please their new boss, Section Chief Oh Sang Shik, and keep up with the ambitious employee Jang Baek Ki. But they quickly find that their department is a little different from the others. Geu Rae does his best at his new job while trying not to lose his humanity along the way.