Young students of the very select "Ninjas of Iga School", Hana Attori decided to leave her clan to find and fight the murderer of her father and her sister. Only here, this assassin is none other than Oda Nobunaga ... the greatest lord of Japan! Little Hana Attori does not know a lot of things, but she knows that you cannot go to war alone against a country ... So it is accompanied by her friend Goro, Fumio the artificer and Shifu the cowardly sorcerer that she is going to organize her clandestine struggle ...