Miharu Rokujo was content to live life without caring about anything but his destiny has other plans. The secret art known as Shinra Banshou, with the power to control the entire world, is hidden inside him and every ninja is involved in the fight over it. He joins the school Nindo Club, which teaches the way of the ninja, in order to protect himself and the club's advisor, Kumohira, promises that he will try to find a way to remove the secret art from Miharu's body and protect him. When Raimei, a ninja from Tokyo, persuades them to go to Fuuma Village whose leader knows just about all there is to know about ninja arts, the three of them, plus the Nindo Club president, make their way there. When they arrive, they discover that the village has been attacked by the Iga Grey Wolves, a faction of Iga shinobi that will stop at nothing to get the secret art. They are forced to fight when the Wolves discover Miharu's presence but when things get difficult the Grey Wolves retreat, leaving just the most deadly Grey Wolf to finish the job. Just as Miharu is agreeing to go with him in order to save the others, the leader of the Fuuma Clan arrives in time to save the day.