Seeking the power of the Holy Grail, something that can make miracles occur, seven different mages summon seven Heroes, and fight until the last man remains--a battle of epic proportions, the Holy Grail War. In preparation for the war, various participants are chosen from all over the globe. Eight years ago in Einzbern Castle in Germany, a girl named Illyasviel is born. Her father, Kiritsugu Emiya, embraces her knowing he will be part of the battle, as well.

Kiritsugu and his daughter Illyasviel stroll through the Einzbern woods. As Saber watches the happy parent and child, she ponders why Kiritsugu has not spoken to her since she was summoned. And in Fuyuki City, the battle ground where the Holy Grail War will be fought, the seventh and final hero is summoned.

All the servants have been summoned and now it is a game of spy vs spy. Who will be the first to take the initiative in Fuyuki City?

As Saber and Lancer continue their battle, Kiri and Maiya continue the search for Lancer’s master. What they discover is shocking…

Rider suddenly appears just the battle with Lancer reaches its climax, much to Saber's consternation. Undeterred, Rider calls out to the many people observing the fight from within the shadows...but it seems he's not the only heroic spirit drawn in by the battle.

Battle rages throughout Einzbern Castle: Kayneth's magical mercury sphere versus Kiritsugu's formidable gun arsenal, Saber and Lancer join forces against Caster in the forest, and Irisviel detects a new enemy as she and Maiya make their escape.

Kiritsugu and company are wrapping up after the assault on their castle, and the Einzbern Master decides to ignore Saber's desire to pursue Caster, instead leaving on his own to finish off Kayneth. But Kayneth, after being saved by Lancer, has awakened to find himself bandaged and strapped to a bed. Sola-Ui explains the hopelessness of his current situation, and offers a shocking proposal...

Rider, Saber, and Archer sit down for a drink and discuss what makes a King. The talk turns to violence when Assassin interrupts…

The battle against Caster continues as the Heroes have no way of stopping him. Toki is trying to appeal to Archer to use his Noble Phantasm to obliterate the monster. Kiri meanwhile, is planning to destroy the source of the monsters powers.

With all the Heroes exhausted from their win against Caster, Saber has challenged Lancer to a final battle. A battle fought with honor and respect between two Knights. Kiri doesn’t care for honor or respect, he will win by any means necessary and tonight he shows how far he will go.

Natalia has raised Kiritsugu since rescuing him from the island. He has followed her in every step in becoming an assassin. Over the years their relationship has grown to the point of mother and child, so what Kiritsugu does next is…

Saber is hot on the trail of Rider, much to his delight. Meanwhile, Kiritsugu sets off on a different lead. The new player, Matou Kariya, watches in the background as his play unfolds perfectly.

Saber vs. Berserker, Archer vs. Rider, another hero will fall and a secret will be revealed.