An era of turmoil. Nobunaga Oda was trying to conquer the world, and to wipe out all "Ninjas". Iga, Koga and Fuma have joined forces in order to fight Nobunaga. I had been living as the granddaughter of a chief priest at a temple without knowing anything, when, one day, a group of ninjas suddenly appeared in front of me. I hastened back to the temple to ask my grandfather if he knew what was going on, only to find him in deep conversation with a guest. "Nobunaga is trying to wipe out Iga, Koga, Fuma... and all of the ninjas there." "I know, Lord Hattori. We have to stop Nobunaga or the future of the ninjas is doomed." Iga, Koga, Fuma, Hattori... the future of ninjas? What's going on!? My grandfather noticed me and told me that I am the princess who succeeds to the art of Ninjutsu and as the symbol of the pact among Iga, Koga and Fuma. What!? All of a sudden, the whole place was packed with ninjas. I have to go Iga where the allied ninja are gathering with only one of strong ninjas. Are you serious!? What’s going to become of me?