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There was once a Holy Grail War waged by Mages and Heroic Spirits in a town of Fuyuki. However, one Mage took advantage of the chaos of World War II to steal a Holy Grail. Several decades have passed, and the Yggdmillennia family, who took upon the Holy Grail as its symbol, defected from the Mages' Association. Furious, the Association sent forces to deal with the Yggdmillennia, but were defeated. With the Holy Grail system changed, war at an unprecedented scale breaks out.
Decades have passed since the Greater Grail was taken from Fuyuki. The Mage’s Association asks Kairi Sisigou to take part in the Great Holy Grail War.
Despite harboring doubts about her unusual summoning, Ruler heads to the battleground in Trifas, Romania, to preside over the Great Holy Grail War.
A young homunculus boy tries to escape after waking up inside a tank. Just as his strength gives out, Rider of Black appears.
Berserker of Red approaches the Black Faction stronghold. The Yggdmillennia clan and their Servants seize the opportunity to take action.
Saber of Black vanishes after giving his heart to the young homunculus boy. Ruler swears to do everything in her power to grant him his freedom.
Believing a Servant could be behind the string of gruesome murders terrorizing Romania, the Mage's Association sends in Kairi to investigate.
Fiore battles Sisigou after traveling to Sighișoara in pursuit of Assassin of Black. In the face of danger, a familiar figure rushes to her side.
The Great Holy Grail War enters a new phase as the Black and Red factions engage in an all-out conflict. Ruler and Sieg both head to the battlefield.
With the battles raging on, the Rider of Red learns who the Archer of Black is, forcing him to take on his former master.
Sieg stands up to fight a formidable foe and protect his savior, the Rider of Black. Though weak, he's soon joined by a hell-bent Berserker of Black.
The battle between the Lancers of Red and Black heats up, yet they remain gridlocked. Watching, Darnic hatches a plan to get what he wants.
Ruler and the Black Faction rush into the Sky Garden in chase of the Red Faction, who are now in possession of the Greater Grail.
Sieg admits that he can't give up his desire to help his brethren, and the Rider of Black gives him his full support. Until Celenike shows up.
Despite Roche's blind admiration for Avicebron, the Caster of Black reveals to Roche his deep-seated reasons for turning on the Black Faction.
To stop Shiro, acting head of the Yggdmillennia clan Fiore proposes a joint attack on the Hanging Garden with Sisigou and others.
When the mysterious Jack the Ripper resurfaces to slaughter more magi, Fiore forms a plan to corner the killer.
While walking through town in hopes of luring out Jack the Ripper, Sieg and Jeanne observe the townspeople and discuss what it means to be human.
Pulled into Jack the Ripper's nightmare filled with lost and abandoned children, Jeanne makes a fateful decision to lay the lost souls to rest.
The Hanging Garden is moving out of range, with the chance for a final battle swiftly approaching. Caules pushes Fiore to make a choice.
The Yggdmillennia alliance make their final preparations before setting out for the Hanging Garden. Jeanne reminds Sieg of the power that lies within him.
Maaya Sakamoto
Ruler (voice)
Natsuki Hanae
Sieg (voice)
Junichi Suwabe
Saber of Black : Siegfried (voice)
Shunsuke Takeuchi
Archer of Black : Chiron (voice)
Ryotaro Okiayu
Lancer of Black : Vald III (voice)
Rumi Okubo
Rider of Black : Astolfo (voice)
Mitsuru Miyamoto
Caster of Black : Avicebron (voice)
Ai Nonaka
Berserker of Black : Frankenstein (voice)
Sakura Tange
Assassin of Black : Jack l'Éventreur (voice)
Koki Uchiyama
Shirou Kotomine (voice)
Saori Hayami
Archer of Red : Atalante (voice)
Miyuki Sawashiro
Saber of Red : Mordred (voice)