The story takes place in the usual Japanese city, the city of Fuyuki. Hidden from society, in this city there was a deadly war. Seven sorcerers, known as "Masters", cause powerful relatives called "servants", and they all fight each other to the last. It is said that the latter reaches Holy Grail, who will fulfill his desire. Only a few know when this war began and what is the Holy Grail, but the war is about to start this year. Admiring stepfather, he trained to be sorcerer. However, he did not possess the talent and could hardly use a single kind of witchcraft. His stepfather has already died, and today he is a sorcerer without skills and knowledge.