The previously untold story of the Fourth Grail War. A story 10 yers before the happenings of Fate/ Stay Night. The protagonist is Emiya Kiritsugu. An idealist, a merciless killer, a father and later the role model of Emiya Shirou. Which one he really is?
Perhaps he isn't the only participant. 6 other Masters are joining a war. A man without any hope for happyness, the honored father of Rin, a man who's ready to cross hells to save one little girl, a youngster who's iching to prove himself, a young man past insanity and a man who blieves he's the best. They all are participating having their hopes and wishes crushed or reaching salvation in the end.
The first chapter is about the introduction of the mentioned seven masters and the very start of the Grail War believed to be the most devestating of all.