Set in 16th Century Japan, the film takes place against a background of civil war, with the Iga ninja being ruled over by warlord Nobunaga Oda with an iron fist, keeping them in check with harsh laws and handing out executions at will. Mika Hijii plays Ukagami, the toughest female warrior of her clan, who is sent out on a mission by the villainous ‘Lesser Ninja’ as part of his plot to take over the Iga. After his trap fails, he kidnaps her childhood friend, pushing her to go against the clan in a bloody mission of rescue and revenge.