Akasaka Kanon who acts as Ally of Justice and magical girl Aono Riri. As two fighting the organization of evil that plans the world domination, the good citizen is protected. The special existence that is thanked even from who and everyone envy.

The newly appointed teacher came to the school of which they commuted secretly. The teacher is kind in any student, the class is also interesting. Wonderful teacher... everyone thought so.

However! In fact, it is an elite mystery man of evil who came to let the magical girl fall for evil! He brainwashes the magical girl by using the class, in addition, if the night comes, it returns to the mystery man, magical girl's heart and body are defiled in an unfair means.

And Magical girls are transfigured to the magical girl of evil that drowns in pleasure and evilness...