As Saber chases Rider through the city on her motorcycle, Kiritsugu investigates and concludes that Rider was not responsible for attacking Iri and Maiya. Saber catches up to the real Rider and Waver, and the two Servants duel, resulting in the destruction of Rider's chariot. Meanwhile, concluding that the Matous were behind his wife's kidnapping, Kiritsugu tortures Kariya's brother Byakuya, who reveals that Kariya was working with Kirei. Kirei made a deal with Kariya to kidnap Iri using Berserker's Noble Phantasm, which allows him to disguise himself as another hero (in this case Rider), in return for the restoration the two Command Seals this consumed and the promise of a duel with Tokiomi at the church. When Kariya leaves, Kirei orders Zouken, who has been hiding and watching them, to show himself. Zouken remarks that he and Kirei are the same in their enjoyment of watching Kariya suffer, before he is driven away by Kirei. Kariya arrives at the church to duel Tokiomi only to find his corpse. Aoi arrives at the church soon after, and on seeing the two of them believes that Kariya is her husband's killer. As Aoi weeps for Tokiomi, she angrily asks Kariya if he is happy now. A confused Kariya attempts to explain the situation and places blame on Tokiomi for his treatment of her and Sakura, but Aoi reprimands him, stating that he doesn't understand her and that he's never loved anyone. Kariya snaps and strangles Aoi. By the time he comes to his senses, he has killed her. As Kariya stumbles out of the church in despair, Archer and Kirei are shown to have been watching from the balcony, enjoying the tragedy as it unfolded.

As Kiritsugu and Saber arrive at the theater on separate paths, Saber is attacked by a gun-wielding Berserker in the underground parking lot. Meanwhile, Rider and Waver encounter Archer on the bridge. As they share a final toast before their duel, Rider asks Archer to join forces with him and conquer the world and beyond, but Archer politely declines. Saber manages to destroy Berserker's gun, but is startled to find he knows the exact length of her sword. She ask for his true identity, and Berserker removes his mask to reveal Sir Lancelot, one of Saber's most trusted knights, gravely shocking her. At the same time, a dying Kariya begins hallucinating due to his guilt over Aoi. Rider summons Ionian Hetairoi and he and his army charge at Archer. Archer pulls out his sword Ea and uses his Noble Phantasm Enuma Elish to destroy Rider's army and Ionian Hetairoi, sending them back into real world. Rider asks Waver if he would like to become his retainer, to which he agrees. Rider pulls out Waver from his horse and orders him to live on and pass down the tale of his final battle. Rider charges at Archer and is slain by Ea, but not before Archer tells Rider that he respects him as his equal. In admiration of his loyalty to Rider, Archer spares Waver's life and departs, leaving Waver mourning. Kiritsugu finally reaches Kirei, who has laid out his wife's body on the theater's stage.