The battle between Emiya, Rin and the dangerous Caster has finally begun! In order to regain their servants, both under Caster's spell, the two must face unbeatable odds. Will they be able to destroy Caster and continue the Holy Grail War or will this battle be one they cannot win? The only things on their side are luck and their own ingenuity!

A magus adopted high school student Shirou Emiya as a child. Inspired by his adoptive father’s bravery, Shirou desires above all to follow in his footsteps and become a hero, despite his lack of natural talent. However, a war is raging among the magi, and Shirou is about to find himself at the center of it...