In order to acquire permission to attend the Otome school of Garderobe, inexperienced Arika must face Nina in an exhibition battle during the coronation ceremony of Mashiro, knowing that if Nina loses, she will be expelled. Nina gains the upper hand in the match, but a mysterious knight attacks during the ceremony, and Arika catches a falling airplane, holding it long enough for Brigadier General Haruka Armitage, a Meister Otome, to throw it to safety.