Shirou Emiya is a high school student who always helps people around him whenever he has a spare moment. His dream has always been to become a hero of justice. One night, he stumbles upon a battle between two Servants...

Rin and Shirou run into a girl named Illyasviel von Einzbern. She has a Servant who is a big mad monster! What does this girl want from them?

Rin suspects Kuzuki might be the Master of Caster. With the help of a hesitant Shirou, she implements a dangerous plan in a remote location to test out her theory.

Rin finally asks Shirou out on a date, but their enjoyment is cut short when Caster makes her move. Shirou is forced to make a difficult decision to protect the people he cares about.

Caster keeps Saber hostage, but Kuzuki is not happy with his Servant calling her own shots. Rin, determined to take out Caster and her Master, orders Archer to take out Kuzuki. Will Archer do as she says?

Despite losing Saber, Shirou is determined to fight. Since Caster is protected by Kuzuki and Archer, Shirou and Rin decide to team up with another Master. Left with no other option, they set out to find Illyasviel and Berserker.

Shirou and Rin finally reach the castle where Illyasviel and Berserker are. However, there are other unexpected guests visiting Illyasviel.

Rin is helpless now in Kirei's hands, while Shirou faces Archer. Is he skillful enough to defeat Archer?