The show follows the early years of Japanese warlord hero Oda Nobunaga in the 16th century. As a young man Oda was not seen as the right heir to the Oda clan, but through a masterful political marriage arranged by his father, Oda Nobunaga not only gained influence, he also became the Daimyo who joined the three imperial counties to unite Japan.

Oda Nobunaga

The head of a psychological research institute and a lieutenant in the Japanese Air Force are both investigating a mysterious cult known only as 'Midori no Saru' (The Green Monkey). Members of this group have committed a string of violent suicide-attacks on military bases and public areas. Part of the mystery seems to involve a young child and an enormous Buddha statue outside Tokyo, but how could all these pieces possibly fit together?