Four years ago, a high-class school was established on the premises of the castle. One day, Creed, a soldier, is invited to the school and ordered to protect princesses from evil people. He meets Mio, his old friend, Silky, the woman of his dreams and so on there.... His mission is to protect them, but the story goes the other way, involving their surroundings. Who are the evil people? What's happening around them?