At Tokyo Beatrice University Attached High School, where magic becomes reality through the mysterious power known as Beatrice, Yoshimura Mamoru, a high school student saved by Beatrice in his youth, embarks on a journey. Encountering Takasu Ayako, a second-year student and disciplinary committee director, he is drawn into her enigmatic world. Despite her reputation as Witch Beatrice or Death Angel, Ayako is a kind-hearted genius with formidable Beatrice abilities, including the capability to take down satellites.