Illya has been chosen by the Kaleidostick Ruby to become the new magical girl.

A challenger appears, just when Illya is having trouble collecting the Rider card under Rin's instructions.

A mysterious transfer student, Miyu Edelfelt, has joined Illya's class. Is she friend or rival?

Illya and her friends have been defeated by Caster. They must figure out how to improve their teamwork in order to win the rematch.

There is no time to celebrate their hard-won victory, as Saber card suddenly appears to strike down Rin and Luvia. Faced with their strongest opponent yet, which option will Illya and Miyu choose?

Illya calls upon the power of the Archer card to defeat Saber.

Illya stays home to recover from a fever, but gets into some hijinks with Miyu. That night they attempt to capture the Assassin card.

Suffering from shell shock, Illya tells Rin she wants to resign from being a magical girl. But fate has something different in store for her.

Miyu attempts to capture the last card by herself using Saber's power.