Circa 22,000 years BC. The southern reaches of Iberia are home to two tribes. Despite their salient differences, the two species of human live in peace. That is, until one of those clans harbours a banished tribesman and men are led into the unchartered territory of violent conflict. An exiled man returns to solitude. Only a chance encounter forces him to return home in an attempt to rescue the one person who hasn't forsaken him.