The Holy Grail is a powerful, ancient relic capable of granting any wish the beholder desires. In order to obtain this power, various magi known as masters summon legendary Heroic Spirits called servants to fight for them in a destructive battle royale—the Holy Grail War. Only the last master-servant pair standing may claim the Grail for themselves. Yet, the third war ended inconclusively, as the Grail mysteriously disappeared following the conflict. Many years later, the magi clan Yggdmillennia announces its possession of the Holy Grail, and intends to leave the Mage's Association. In response, the Association sends 50 elite magi to retrieve the Grail; however, all but one are killed by an unknown servant. The lone survivor is used as a messenger to convey Yggdmillennia's declaration of war on the Association. As there are only two parties involved in the conflict, the Holy Grail War takes on an unusual form. Yggdmillennia and the Mage's Association will each deploy seven master-servant pairs, and the side that loses all its combatants first will forfeit the artifact. As the 14 masters summon their servants and assemble on the battlefield, the magical world shivers in anticipation with the rise of the Great Holy Grail War.

Ritsuka Fujimaru—humanity's last master. It would not have been possible to restore humanity without him. However, he does have a shortcoming... he is far too honest! A slapstick comedy in which Fujimaru's simple questions sway the heroic spirits! (Source: MAL News)

A technological hell masquerading as paradise, Tsukimihara Academy is an artificial high school that serves as the setting for the next Holy Grail War. Created by the Moon Cell computer, the school is inhabited by Earth-projected souls who have even the slightest aptitude for being a Master. Of these 256 souls, 128 will be chosen for the main tournament and granted a Servant. With all of the Masters selected, the Academy activates a purge, targeting the remaining lifeforms for elimination. Awakening in a pool of his own blood, Hakuno Kishinami refuses to die. Fueled by unknown feelings of hatred, he vows to fight for survival. As he struggles to escape from a relentless pursuer, he finds a crimson blade plunged into the ground; and by pulling it out, Hakuno summons his own Servant, Saber, who instantly destroys his pursuer in a flurry of rose petals. With his newfound power, Hakuno must now begin his journey to Moon Cell's core, the Angelica Cage. There, he will unveil the reason for this artificial world and the secrets of his own blood-soaked past.

The wandering knight, Bedivere, reaches the end of his journey. The year is A.D. 1273 in Jerusalem. The Holy Land has been transformed into a massive desert, the people have been forced out of their homes, and three major powers wage war with each other in this wasteland. The Knights of the Round Table come together to protect the Holy City and their Lion King. With the whole of his kingdom summoned into a strange land, Ozymandias, the Sun-King, quietly plots against the tyranny of this bizarre realm. The mountain people, protectors of those who were stripped of their land, await their chance at rebellion. In order to fulfill his mission, Bedivere heads for the Holy City where the Lion King rules. There he meets humanity’s final Master, Ritsuka Fujimaru, who has come to Jerusalem, accompanied by his Demi-Servant, Mash Kyrielight, in their quest to restore human history. Bedivere joins with Fujimaru and his companions to undertake this quest. (Source: Official Website)