Injured as a child, Atlatl dreams of one day earning his father's respect as a hunter. But when Atlatl brings the young saber tooth to his Clan, it leads to a devastating moment of torn loyalties between Atlatl and his father--a moment that will change their lives forever. Then an epic disaster strikes, and suddenly Atlatl has to rely on wits, ingenuity and bravery to face his biggest foe yet and try to save what remains of his Clan.