Sally Yumeno, a young princess from the magical kingdom of Astoria, arrives on Earth to experience life among humans. Disguised as an ordinary schoolgirl, she lives with the Hanamura family, befriending their daughter, Yoshiko. Sally possesses magical abilities, which she uses to solve everyday problems, often leading to humorous or heartwarming situations. Her powers, while helpful, sometimes cause unintended consequences, creating lighthearted chaos.

Sally’s adventures are intertwined with her interactions with classmates and neighbors, including her best friends, Yoshiko and Sumire Kasugano. The trio navigates school life, friendships, and occasional conflicts, with Sally’s magic often playing a central role. Despite her extraordinary abilities, Sally strives to blend in and learn about human emotions and customs, showcasing her curiosity and kindness.

The series also introduces other magical beings, such as Sally’s mischievous younger sister, Princess Lala, and her loyal butler, Kabu. These characters occasionally visit Earth, adding layers to the narrative by bringing their own magical antics. The dynamic between Sally and her magical family highlights themes of responsibility and the challenges of balancing her dual identity as both a princess and an Earth-dwelling schoolgirl.

Throughout the series, Sally’s magic is used to resolve conflicts, assist those in need, and explore the complexities of human relationships. The episodic structure allows for a variety of scenarios, ranging from comedic misunderstandings to moments of genuine emotional depth. The narrative emphasizes themes of friendship, empathy, and the importance of understanding others, all while maintaining a whimsical tone rooted in its magical premise.