"Megu-Chan" features Megu, a young, accident-prone witch on Earth to prove her worth as a future Witch World leader. Under the care of Mammi Kanzaki, a former witch, and her bewitched family, Megu learns about human emotions and relations while navigating her powers. Throughout her journey, she faces monsters, rivals, and her own dark impulses, evolving from a selfish girl into a compassionate, loving individual, showcasing her noble character and readiness for the throne through self-discovery and overcoming adversities.