The boy wished to protect the girl. That was his thought. 10 years after the Holy Grail War—a battle waged by Masters and Servants over the wish-granting container, the Holy Grail—another war breaks out in Fuyuki City. Shirou Emiya—the adopted son of Kiritsugu Emiya, a participant of the previous Holy Grail War—resolves to fight, carrying out Kiritsugu’s dying wish.