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.
Episode 1
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.
Episode 2
Despite harboring doubts about her unusual summoning, Ruler heads to the battleground in Trifas, Romania, to preside over the Great Holy Grail War.
Episode 3
A young homunculus boy tries to escape after waking up inside a tank. Just as his strength gives out, Rider of Black appears.
Episode 4
Berserker of Red approaches the Black Faction stronghold. The Yggdmillennia clan and their Servants seize the opportunity to take action.
Episode 5
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.
Episode 6
Believing a Servant could be behind the string of gruesome murders terrorizing Romania, the Mage's Association sends in Kairi to investigate.
Episode 7
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.
Episode 8
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.
Episode 9
With the battles raging on, the Rider of Red learns who the Archer of Black is, forcing him to take on his former master.
Episode 10
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.
Episode 11
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.
Episode 12
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.
Episode 13
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.
Episode 14
Despite Roche's blind admiration for Avicebron, the Caster of Black reveals to Roche his deep-seated reasons for turning on the Black Faction.
Episode 15
To stop Shiro, acting head of the Yggdmillennia clan Fiore proposes a joint attack on the Hanging Garden with Sisigou and others.
Episode 16
When the mysterious Jack the Ripper resurfaces to slaughter more magi, Fiore forms a plan to corner the killer.
Episode 17
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.
Episode 18
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.
Episode 19
The Hanging Garden is moving out of range, with the chance for a final battle swiftly approaching. Caules pushes Fiore to make a choice.
Episode 20
The Yggdmillennia alliance make their final preparations before setting out for the Hanging Garden. Jeanne reminds Sieg of the power that lies within him.
Episode 21
Chiron battles his former disciple, Achilles, in a bare-knuckle fight. As Astolfo and Sieg attack the Hanging Garden, Sieg makes a fateful decision.
Episode 22
Mad with fury and unable to forgive Ruler for what she did to the Jack the Ripper children, Atalanta challenges her to a battle to the death.
Episode 23
A merciless attack by Semiramis leaves Kairi and Mordred heavily wounded. Shakespeare leads Jeanne down a painful journey into her past.
Episode 24
Shiro declares that he's attained Third Magic and is now able to "save the world," but Jeanne firmly believes that he's wrong in his beliefs.
Episode 25
Shiro and Semiramis make peace with themselves as their world crumbles around them. Young Sieg makes a shattering choice in an attempt to change fate.
