In the mystical city of Fuyuki, a sacred ritual unfolds as seven masters command heroic spirits to vie for the legendary Holy Grail, capable of granting any wish. These spirits, known as servants, embody the essence of legendary heroes like 'Saber,' 'Lancer,' and 'Archer.' Masters forge pacts with their chosen servants, engaging in fierce battles until only one pair prevails in the deadly contest known as the 'Holy Grail War.' As the Fifth Holy Grail War looms, the skilled mage Rin Tohsaka readies herself alongside her loyal servant Archer, inheriting her family's legacy. Unexpectedly, Shirou Emiya, a fellow student, is thrust into the fray as a Master, prompting Rin to intervene when he faces mortal danger. Teaming up with Shirou and his servant Saber, Rin embarks on a quest to unravel the enigmatic schemes entwined within the Holy Grail War. Will fortune smile upon Rin and Shirou, guiding them to triumph, or will the shadows of defeat loom over their fateful journey?