10 tahun yang lepas, pengamal magis Kiritsugu Emiya selamatkan seorang sendirian yang dapat berikhtiar untuk hidup menghindari dari bencana besar. Dalam tangisan gembira, dia mengisytiharkan diri terselamat dengan jayanya. Budak lelaki bersumpah bahawa dia mahu menjadi wira yang sedia menyelamatkan orang lain. 5 tahun setelah kematian ayah angkat sendiri, Shiro Emiya mendapati diri terbabit dalam pertempuran nekad antara tujuh magis bergelar Master, yakni setiap orang menguasai semangat legenda hero dikenali sebagai Servant dengan usaha mencari satu impian diberkati oleh Holy Grail legenda. Dalam pertarungan ini, Shirō berpeluang untuk menghadapi hantu lampaunya, dan meneroka impian demi masa hadapannya. Menerusi kuasa Holy Grail, hajat sendiri tercapai akhimya, kerana hero keadilan pasti dapat menumpas- kan kuasa jahat.
Ten years ago, the magus Kiritsugu Emiya saved one lone survivor of a great disaster. As he cried in happiness, he proclaimed that by saving him, he had saved himself. The boy swore then that he would become a hero who lived to save others. Five years after the death of his foster father, Shiro Emiya finds himself drawn into a battle to the death between seven magi called Masters, where each commands the spirit of a hero of legend called a Servant in pursuit of having one wish granted by the legendary Holy Grail. In this battle, Shirō will finally have the chance to face the ghosts of his past, and to find his path to face his dreams and his future. Through the power of the Holy Grail, his wish will finally come true, for a hero of justice must have an evil to defeat.