The story follows two young sisters who chase their shadows to a seaside grove and discover a realm of floating islands. Their curiosity propels a sequence of whimsical episodes featuring King Coco Bolo, an admiral and other court figures, eccentric policemen, a tame dragon, and musical pageantry aboard a royal yacht. Encounters blend playful danger and invention, presented in an episodic, child-centered narrative that emphasizes imagination, perseverance, and the rewards of curiosity.