Shirou Emiya, a high school student who always helps people around him, stumbles upon a battle between two Servants.

Rin takes Shirou and Saber to the church in New City and introduces Shirou to Kirei Kotomine.

Rin and Shirou encounter a girl named Illyasviel von Einzbern and she has a Servant who is one big mad monster.

Saber tells Shirou about Heroic Spirits and Noble Phantasms and explains why she doesn't want to reveal her true identity to him.

After a student goes missing, Shinji also is nowhere to be found.

Shirou and Rin continue to investigate the bounded field at the school to discover who the third Master is.