In Fuyuki City, a mystical ritual unfolds where seven masters command heroic spirits to vie for the legendary Holy Grail and its wish-granting power. As the Fifth Holy Grail War looms, the skilled mage Rin Toosaka, alongside her servant Archer, steps into the deadly competition as the last hope of the esteemed Toosaka lineage. However, when a fellow student, Shirou Emiya, unwittingly becomes a Master and faces mortal peril, Rin must intervene. United with Shirou and his servant Saber, Rin embarks on a quest to unravel the secrets enshrouding the Holy Grail War. Will fortune favor their ambition, or will their journey be marred by misfortune and defeat?