The Holy Grial War is a feudal battle of the seven magicians who act as masters. Leader, by using the order seals, the Brave Spirits, known as Servants, are assigned the duty of fighting with them when they enter the battle. Rin Toosaka is one of the magicians who competed in the Fifth Holy Grail Battle.
She hopes to win the final reward for her servant Archer — the Holy Grail, a mystical piece that gives the woman a dream. An unintended rival in Rin, Emiya Shirou, is to command a Servant of his own, known as Saber. Rin and Shirou attempt to form a temporary coalition when they confront each other in the Holy Grail War. As they meet each other, they are confronted.