An old Roman senator embarks on what may be his last endeavour: recounting the history of the Clefts, an ancient community of women living in an Edenic, coastal wilderness, in the valley of an overshadowing mountain.
The Clefts have no need, or knowledge, of men – childbirth is controlled through the cycles of the moon, and their children are always female. But with the birth of a strange, new child – a boy – the harmony of their community is thrown into jeopardy.
At first, the Clefts are awestruck by this seemingly malformed child, but as more and more of these threateningly unfamiliar males appear, they are rejected, and are exposed on the nearby mountainside, sacrificed to the patrolling eagles overhead.
Unbeknownst to the Clefts, however, these baby males survive, aided by the eagles, and thrive on the other side of the mountain. It is not until a curious young Cleft named Maire goes beyond the geographical, and emotional, divide of the mountain that this disquieting fact is uncovered – forcing the Clefts to accept the prospect of a now shared world, and the possible vengeance of the wronged males.
