Watch Full Movie Online. 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.