The Holy Grail War is a battle royale amongst seven magi who function Masters. Masters, via the usage of the command seals they’re given after they enter the battle, command Heroic Spirits referred to as Servants to struggle for them in battle. In the Fifth Holy Grail War, Rin Tohsaka is among the many magi getting into the competitors. With her Servant, Archer, she hopes to acquire the final word prize—the Holy Grail, a magical artifact able to granting its wielder any want. One of Rin’s classmates, Emiya Shirō, unintentionally enters the competitors and finally ends up commanding a Servant of his personal referred to as Saber. As they discover themselves going through mutual enemies, Rin and Shirō resolve to kind a brief alliance as they problem their opponents within the Holy Grail War.