Sora Harewataru of Skyland chases the monster Kabaton when he snatches Ellee, the kingdom's infant princess, and follows them through a strange hole that drops her and the baby into Sorashido City on Earth. Middle schooler Mashiro Nijigaoka and her grandmother Yoyo take the pair in while Sora, baffled by televisions and bicycles, looks for a way to bring Ellee home. This manga is a lighthearted spin-off of the TV anime of the same name, centered on the everyday lives of Sora and Mashiro.