
The Sixth Holy Grail War is beginning. Two opposing factions summon their own Servants to fight for their one true wish. The Red Faction, Nidhogg, faces against the Black Faction, Yggdrasil, in a war that will ravish the entirety of Fuyuki City. Though the factions oppose each other, naturally, there will only be one winner of the war. Many Masters and Servants team up within their own faction, though internal fighting is also a problem.
However, the Grail has manifested itself as an Eighth Servant class. Every time a Servant is defeated, the Grail loses power, and is theoretically only defeatable when there is one Servant left standing. Will you be the one that wins the war?