Shinji is nearly defeated, but everyone is in for a surprise when Rider's true master is revealed! In the aftermath of Shinji's rage, Shiro learns about Saber's past and why her noble phantasm is what it is. But are things finally calming down? No one is prepared when Caster starts a new onslaught! Tosaka is determined to put an end to Caster's machinations, but it may prove harder than she ever imagined...