Fukami is a high school janitor whose father was a gangster. He works at the school as a janitor instead of belonging to the gang so he can watch out for Yui, the daughter of his deceased father's brother Majima Yoshiki. One day, a gang feud erupts and Yoshiki is killed. Yui becomes the next target.

In a time when the main source of energy was still coal, there was a man who saw the future in oil. Young Tetsuzo Kunioka who hails from Moji, Kitakyushu, rides out into the oil business, but is faced with numerous challenges and competitors who stand in his way, including domestic suppliers and major western oil companies, or the "oil majors". But Tetsuzo never gave up, however despairing the situation was. He always found a way and paved a new road with his unconventional ideas, eccentric actions, and most of all, his caring heart toward his own men. That style of Tetsuzo's was not something that would ever change, even when the tides were against him in a war-lost Japan.

A high school girl wakes up each day with no memory of the day before. When she agrees to date a shy classmate, Toru, he begins to fall for her—despite her rule against falling in love.