曾几何时,世界发生前所未有的巨变,许多人被带往天空,消失不见。而留在大地上的人,则认为那些消失的同胞罪恶深重,受到神的出发。为此他们安于现状,建立了所有人都必须遵守集体规矩的乐土艾格尔国。人们按部就班工作,未获得承认而努力,他们将目光投向大地,不敢仰望那蔚蓝深邃的天空。与此同时,在地球的中央,生活着一群神秘之人。他们的重力仿佛与地面上的人相反,一不小心便会受到“天空重力”的吸引掉到天上。美丽女孩帕特玛不愿圈在阴森的地下堡垒,她尝试离开这里,结果受到“蝠人”的袭击,不慎掉到地面之上,由此结识了艾格尔国的问题少年艾治(Age)。 两个不同国度的青年男女,他们的神奇故事就这样开始了……A world, forever beyond your expectations. In a dark, cramped, underground world of endless tunnels and shafts, people wear protective suits and live out their modest yet happy lives. The princess of the underground community, Patema, goes out exploring as always, inspired by her curiosity of the unknown depths of the world. Her favorite spot is the "danger zone," an area forbidden by the "rule" of the community. Despite being frequently chastised by her caretaker Jii, she cannot hold back her curiosity for the reason behind the rule, because no one would tell her what the "danger" was. When she approaches the hidden "secret," the story begins.