After years of relentless hardship, Inuyasha and his allies finally defeat their nemesis, Naraku. Their joyous victory prompts them to return to their former lives, yet the danger has not vanished. Kanna and Kagura, two of Naraku’s former subordinates, secretly orchestrate the release of a sealed demonic entity that claims to be Kaguya, the legendary Princess of the Heavens. Despite their own distractions, the members of Inuyasha’s group are drawn back together through a series of unusual coincidences involving Kanna and Kagura, coupled with a mysterious pattern of repeated full-moon nights. Realizing that Kaguya is behind the unsettling events and that she wields devastating power, they unite once more to thwart her catastrophic plans for the world.