Yajima Kintaro has returned to Japan after a long time of traveling. As he approaches the age of 50, he is guided by his guardian Nakamura Kayo to join Shuto Electric Power Company as an ordinary employee. Kintaro wreaks havoc once again at this large company, which is facing a mountain of issues such as dealing with the nuclear accident and liberalizing the electricity market. This man will once again heat up Japan and the world!