Sora Harewataru , a girl who dreams of becoming a "hero," chases after them through a dimensional portal to protect the princess.
Reviewers from Anime Review Blog described the premiere as a "back to basics" entry that felt refreshing and wonder-filled. Fans on Reddit noted that while Sora’s initial "Skyland" outfit was a standout, she quickly transitioned into human-world clothing. The episode is highly regarded for its focus on the "Promise" of Sora’s heroic journey and the immediate bond she forms with Ellee.
Sora and Ellee fall from the sky and land in Sorashido City in the human world, where they are spotted by Mashiro Nijigaoka .