The Holy Grail is a legendary treasure that can fulfill all the wishes of its holder. The ceremony to obtain the Holy Grail is called the Holy Grail War. The seven magicians who participated in the Holy Grail War were chosen by the Holy Grail and were called Masters. They made contracts with seven servants called Servants. They were seven heroic spirits chosen by the Holy Grail, divided into seven classes, and summoned as servants. Only one group can obtain the Holy Grail, and these seven groups of people killed each other in order to become the last group. Emiya Shirou, the adopted son of Emiya Kiritsugu, accidentally made a contract with the swordsman Saber (セイバー) among the servants and was involved in the Holy Grail War...