In an alternate timeline from Fate/stay night, 7 masters and 7 servants fight to the death for the wish-granting Holy Grail. The Three Founding Families band together in a team effort to take down the rest of the magi and heroic spirits. This is a story of betrayal, love and vengeance.

In an apocalyptic future set hundreds of years after the Adventure children saved the world, both worlds are now at the brink of destruction, with wars and horror raging throughout the lands. Who will stand above the rest and prove themself worthy?