The border province Haruto calls home has been plagued by thieves. Haruto tries to investigate in secret, only to end up arousing suspicion from his sister Charlotte. But all of that is about to change when the thieves go after Charlotte herself!

Haruto continues to fight villains by night in costume for Charlotte's entertainment. One night, he stumbles upon a group of magicians, but he soon finds that their presence is just the beginning of a much greater, darker conspiracy...