A trilogy adaptation of the third route of the well-known visual novel Fate/stay night commences with its first film. Another vicious war breaks out in Fuyuki City after a decade since the Holy Grail War, where Masters and Servants fought fiercely for the mythical wish-granting container. Shirou Emiya, who was adopted by a former participant Kiritsugu Emiya, lives a harmonious life surrounded by beloved individuals. His underclassman Sakura Matou is exceptionally close to him, bringing joy and company to his otherwise isolated life. However, when the Holy Grail War begins, Shirou's serenity is shattered.