The Holy Grail War - This is a competition in which seven magi call seven Heroic Spirits to vie for the power of the "Holy Grail," which provides a miracle. The fourth conflict has now begun in that combat, which has been postponed three times. The magi entrusted their most cherished hope of victory to the battleground known as "Fuyuki," but among them was a man who was always alone and couldn't understand the purpose of his battles. Kotomine Kirei was his surname. Kirei had been perplexed by fate's guidance and had continued to wonder. Why were the Command Seals bestowed on someone like him? However, by chance, Kirei's fights brought him face to face with a nemesis. Emiya Kiritsugu is the person in question. A man who was tougher than everyone else, more merciless than everyone else, and who was looking for the Holy Grail's miracle.