At the end of the last Ice Age, on the plains of eastern Colorado, the great beasts that have sustained the people there for generations have disappeared. Already the mammoth and the mastodon have vanished, and now the giant bison are disappearing. Helia, a Spirit Woman of the Grass People, experiences a strange vision as part of her dedication, and now must try to understand what purpose the Great Goddess has in choosing her for a daughter, even as her people struggle for survival against fading resources. With no clear path for them, the fate of her people lies with Helia, daughter of the Goddess.