2000 A.D. Central Asia.

Even though no war or incidents have been found in the area, a singularity related to the Demon God Pillars has been identified from below the earth. With the stage set on the enormous underground hollowed space of "Agartha", the mission to destroy this Sub-Singularity begins!

This is the adaptation of the Epic of Remnant Chapter 2 from the mobile game, Fate/Grand Order.