Once upon a time, there lived a woman with the title of Supernatural Knight, she was Marianne Hoisenberg. Unfortunately, she had to be imprisoned in the Spirit World due to her dissatisfaction with her powers. The one who imprisoned her was her own husband, Albert Hoisenberg, after she gave birth to a daughter named Viona Hoisenberg. But that is just a story of the past. It seems she is preparing to escape from the Spirit Realm and return to the Mortal Realm. And that is very dangerous