Jang Geu Rae (Siwan) played the board game “baduk” (a strategy game somewhat like chess) since he was a child. Playing the game was everything to him, but he failed to become a professional baduk player. Now he is thrown out into the real world. By an acquaintance’s recommendation, He is able to begin to work at “One International” as an intern and struggles to adapt working at a company.

Meanwhile, Ahn Young Yi (Kang So Ra) is a competent and intelligent new intern and Jang Baek Ki (Kang Ha Neul) is another co-worker. Oh Sang Sik (Lee Sung Min) will play their boss.