Rin Tohsaka, a young girl, finds her father's memento. All she has is a catalyst and a pendant. She sets out to summon Saber, a powerful spirit.

Shirou and Rin continue investigating the bounded field at the school. Will they be able to solve this mystery and find out who the third Master is?

Rin and Shirou begin their battle against Caster and Kuzuki while Lancer faces off with Archer. Will Rin's plan work in the end?