The series is a historical drama aesthetically and boldly adapting the life of Oda Nobunaga in his teens up to his time as a warlord against his brother, Nobuyuki.
Kippoushi (Nobunaga), surrounded by castle intrigue, is caught aiding a band of homeless youth who are stealing his father's goods. As his father is about to shoot them, Nobunaga intervenes. His father releases the gang into Nobunaga's care.
Nobunaga is engaged against his will to the daughter of The Viper of Minou, Kichou--secretly a ninja. After the wedding, she tries to kill Nobunaga, but he talks her out of it. She then attempts suicide, but Nobunaga convinces her to remain with him.
As Nobuhide awaits death, Tsuneoki gets wind of a traitor. A brash child, Inuchiyo, begs his way into Nobunaga’s service. On the eve of the funeral, Nobunaga rushes to help Tsuneoki confront the spy, and ends up missing his father’s memorial service.
When Nobunaga requests 500 muskets, of his retainers, only Nobunaga’s mentor Hirate supports him. Nobutomo, titular lord of Owari, makes a grab for real power. As Hirate's health fades, Nobunaga puts his new battle method to the test.