Éiru is the smallest child of an Iron-Age clan. All she wants is to be a mighty warrior who is taken seriously by her kinfolk. But when the village’s well mysteriously dries up, only she is small enough to descend into the belly of the earth to investigate and bring the water of life back to her people. Éiru is the story of a child in search of a quest, and a goddess in search of a champion.

恬静祥和的午后，满头银发、身着红色毛衣的老妇人艾米丽，坐在她那草绿色沙发中若有所思，又似乎什么也没想。这时，门开了，名叫凯特的女子为艾米丽端来了下午茶。当放糖落入茶水的瞬间，艾米丽的记忆似乎也回到了孩提时代。那时，她还是穿着红色裙子、飞扬着披肩长发的小女孩，她无忧无虑奔跑在银色沙滩上，用木棍写下自己的名字。她眺望大海的尽头，一艘轮船正驶向远方。结束了短暂的记忆之旅，艾米丽的思绪再度回到当下。她翻开凯特递来的书本，结果又进入另一条时空隧道，那里有她的好朋友，有她失落的青春时光。 移动的阳光带走时间，而似乎又有什么常驻心间……