The manga centers on Daigo Hinata, a high school boy who worries about his future. One day, a well-dressed and well-mannered gentleman escorts him to the basement of Japan's National Diet Building, where he is ushered into a posh room that houses prime ministers of Japan from eras past. He finds out that he will be the nation's new prime minister in time, and will be taught how to conduct himself by some of Japan's best heads of government.