During the confusion of the battle, Astolfo takes the chance to smuggle the Homunculus out of the castle, but they are spotted and Gordes and Siegfried are sent to catch them. And it still retained the one essence of the Fate series you probably can't take away from any iteration: stylish re-imagining of folk heroes duking it out with anime suoer-powers. In his mind, Sieg meets Siegfried, who asks him what he wishes for. Astolfo mounts his hippogryph and attacks the Hanging Gardens, with Semiramis activating the fortress' defenses. Vlad, Chiron, and Avicebron board the Hanging Gardens and are met by Karna, Achilles, and Atalanta.
Darnic then reaches a chapel where he encounters Shiro. Seeing that there is no way for Vlad to win against Karna in this situation, Darnic prepares his Command Spells. The Black Faction is aware of Spartacus' approach, and begin preparations to face him in battle. Meanwhile, Jeanne is still troubled by Sieg's participation in the war when she sees him collapse. Semiramis arrives to finish him off, but she is interrupted when Modred arrives and engages her.
She then offers to spare Mordred's life if she turns on Sisigou. It is written by Yūichirō Higashide, with character design by Yūkei Yamada. Astolfo, empowered by the new moon, uses one of his Noble Phantasms to negate Semiramis' magical attacks. She convinces Gilles to fight for her again, and he sacrifices himself to protect Jeanne as she unleashes her second Noble Phantasm, La Pucelle. Chiron heals the Homunculus, but warns him that he only has three years left to live.
While Shiro is able to critically wound Sieg, Sieg grabs Shiro and initiates his own Blasted Tree attack, engulfing the both of them in a massive explosion. Sieg decides to leave for the battlefield, finally having discovered his purpose. In Trifas, Jack the Ripper and Reika attempt to ambush Sieg and Jeanne, but are thwarted when Chiron ambushes them instead. Mordred engages Chiron in battle, where they are both able to wound each other. And now the anime world froze in anticipation of the new, protracted conflict, though the Third war was still too fresh. This answer appears to satisfy Achilles, though Semiramis is wary of his motives. Both sides engage in hand to hand combat, where they are almost evenly matched, but Achilles ultimately ends up the victor.
Achilles and Atalanta continue battle, and while Achilles is successful in forcing Atalanta back into her regular form, the battle results in both servants mortally wounding each other. In the Hanging Gardens, Shiro tells Jeanne that he intends to use the Grail to bring salvation to humanity and will eliminate anybody in his way. Astolfo and Sieg continue after Jeanne, but Astolfo is caught in a magical trap, forcing Sieg to continue alone. She unleashes her Noble Phantasm on him, but he absorbs the attack and begins to mutate. Meanwhile, back in the castle, Fiore takes charge in Darnic's absence, attempting to have what is left of the Black Faction forces regroup. Atalanta asks Shakespeare why he's helping Shiro, and he responds that he is interested in Shiro's struggle.
After having a brief flashback of being burned at the stake, Jeanne leaves for the battlefield. Karna and Vlad clash again, but now that Vlad is no longer fighting on Romanian soil, his power is greatly weakened. Before leaving together on a new journey, Jeanne finally tells Sieg she loves him. Astolfo, empowered by the new moon, uses one of his Noble Phantasms to negate Semiramis' magical attacks. Shiro observes the events and surmises that Sieg has been possessed by Siegfried's spirit, granting him Servant-level power, but such a transformation can only last for a few minutes. Using this form, you can report broken and invalid videos. Jeanne then catches up and is shocked to see Shiro, who she recognizes as the Ruler-class servant of the Fuyuki Grail War sixty years ago, Amakusa Shiro Tokisada.
Caules decides to leave on his own to follow Fiore, while Celenike wonders why Astolfo is so interested in Sieg. Siegried knocks out Gordes and removes his own heart to give to the Homunculus, saving his life. Looking for what show an image came from? Spoilers All spoilers must be tagged. As the Servants rush back to the castle, Fiore is attacked by Jack the Ripper, and she is narrowly saved by intervention from Sieg, who distracts Jack the Ripper long enough for the others to arrive. Achilles reveals his wish is to live again as a hero, Atalanta wants all children in the world to be loved, and Karna simply wishes to battle Siegfried again. Chiron privately warns Caules that Fiore's empathy may make her unfit to be the ruler of Yggdmillenia, but Caules promises to be there to help her. Gordes then tries to convince Jeanne to side with the Black Faction, but she reminds him that as the Ruler class, she must remain neutral.
After many years of silence, around the same time as the Fifth Holy Grail War would have happened, the Yggdmillennia, a family of magi, openly declares their secession from the Mage's Association, and that they are in possession of the Grail. Meanwhile, Shiro takes advantage of the distraction caused by the blast to steal the Greater Grail from the castle. She decide to wait three days but realizes that her kindness makes her unfit to be the leader of Yggdmillenia, so she transfers her magical crest to Caules. Seven Masters of Red representing the Clock Tower will be pitted against seven Masters of Black representing Yggdmillennia in a team battle instead of the free for all of a regular Holy Grail War. Karna and Vlad continue to battle each other to a stalemate until Karna is ordered to withdraw as well. Back on the Hanging Gardens, Astolfo regains consciousness and is met by Achilles, who decides to entrust something to Astolfo.