Confronted with deep self-doubt, the introverted 16-year-old Caca forges a contract with the magical creature Paibu, becoming a magical girl. Her goal is to help humanity and improve the Earth. Initially, Caca is dedicated to using magic to help others, but her mind shifts midway, and she begins using it recklessly to seek revenge against those who have bullied her... Is this behavior ethical? Does it truly reflect her inner desires?