Ten years after the Fourth Holy Grail War, a devastating clash between Masters and Servants, another war erupts. Shirou Emiya, whose father fought in the first battle, was leading a peaceful life with the warmhearted Sakura Matou. But when hidden forces begin to stir, Shirou resolves to fulfill his father’s dying wish, protect Sakura, and fight for the Holy Grail.

Shirou has lost his Servant, Saber, and is no longer a Master in the Holy Grail War. Despite this, he refuses to leave the battle, determined to protect Sakura. Meanwhile, a mysterious shadow engulfs the city, killing Masters and Servants one by one. As Shirou faces new dangers, Sakura is drawn deeper into her own destiny as a mage.

The battle rages on as Shirou continues to protect Sakura, now consumed by the darkness. He joins forces with Rin to end the Holy Grail War, while Illyasviel, who knows the truth behind it, confronts her fate. Amidst the chaos, Zouken plots to manipulate Sakura for his own desires. The final fight begins.