Kaguya Otsutsuki suddenly emerges from Madara’s body. She is the mother of Hagoromo, the Sage of the Six Paths who entrusted his powers to Naruto and Sasuke. Kaguya’s power is immense and instantly sends Naruto and Sasuke to an alternate dimension. Naruto and Sasuke are the only ones who can seal away Kaguya, but they can’t find a jutsu that works against her!

Kaguya Otsutsuki suddenly descends from the heavens as the people of the Land of Sou look on in surprise and suspicion. But their king, Tenji, is enthralled by her and takes her for his concubine. In this age of endless war, Kaguya wishes for nothing but peace. But as the self-proclaimed protector of the Divine Tree, she soon finds herself engulfed by the tides of chaos and war.

Near the Divine Tree is an area known as the Peak of Demise. No one is allowed to go near it, except those chosen by Kaguya to undergo a ritual she has established. Gamamaru, a Sage Toad, says the truth lies beyond the peak—those words stir Hagoromo’s curiosity, and he decides to head out to investigate.

Kaguya is furious that Hagoromo has broken the law. Hagoromo finds out what Kaguya did in the past and makes up his mind to fight her. Knowing nothing about her, Hagoromo cannot trust her—he wonders if the love and the despair she experienced are the sole cause of her anger. Unable to reach an understanding, mother and sons begin their long, sad battle.

Black Zetsu reveals that he masterminded and influenced all the events from the end of Ashura and Indra's era to the current Fourth Great Ninja War. Naruto rejects Black Zetsu’s claim that the entire history of shinobi was solely for the resurrection of his mother, Kaguya. Naruto and Sasuke work together to seal away Kaguya, but they can't find a way to counter her.

The Infinite Tsukuyomi does not affect Hashirama, Tobirama, Hiruzen and Minato because they are reanimated. Hagoromo, the Sage of the Six Paths, appears and explains to the four that Hashirama and Madara are the reincarnations of his sons Ashura and Indra. Hagoromo recounts the tale of how he founded Ninshu, the Ninja Creed, and about the lives of Ashura and Indra.

Hagoromo's two sons, Ashura and Indra, share a happy childhood, training and playing together. Indra is naturally gifted with great talent, and at a tender age is nicknamed the “genius of Ninshu.” On the other hand, Ashura has no aptitude for Ninshu. Still, the two boys are very close. But Hagoromo is unaware of the malevolent power stirring in the shadows…

Hagoromo sends the brothers to two battle-scarred regions left untouched since the fight with Ten Tails. He then announces that he will choose his successor depending on the outcome of their missions.

Ashura sets out on a journey, intending never to return. He ends up in a village where the people suffer from a mysterious illness.

Everyone believes that Indra is the best choice to be Hagomoro's successor, and the sage's indecision begins to cause anxiety among his followers. Finally, Ashura returns home, and Hagoromo reveals who he has chosen.