After spending time learning the royal ropes, Sofia is finally ready to discover some of the secrets of Enchancia. While on a trip to Tangu, Sofia accidentally releases a rambunctious kid genie from a magical lamp. Then during her return to Merroway Cove, a jealous mer-boy accidently traps them both in the undersea cave of a giant narwhal. And when Sofia discovers a secret library, she begins a journey to learn the true power of her amulet!