Soaring Sky! Pretty Cure

Sora Harewataru lives in the magical kingdom of Skyland. Her greatest dream is to become a hero. So when the villainous Kabaton from the Undergu Empire kidnaps Skyland's baby Princess Ellee, Sora follows them through a tunnel, and she and Ellee land in Sorashido City on Earth. There, Sora befriends a girl named Mashiro, and when Kabaton attacks again, Ellee grants Sora the power to become a Pretty Cure, Cure Sky. Together with Mashiro and their friends Tsubasa and Ageha, who also become Pretty Cures, Sora fights the Undergu Empire's forces to protect Ellee, while Mashiro's grandmother tries to open the way back to Skyland.