Jang Geu Rae played the board game go since he was a child. Playing the game was everything to him, but he failed to become a professional go player. Now he is thrown out into the real world. But when his gaming plans fail, the down-and-out Geu Rae is forced to get an office job and goes to work as an intern by an acquaintance’s recommendation for large company called One International. On his first day, Geu Rae faces the 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.