In a land where a sixth child carries penalty of death, a young woman alongside two brothers, set out to escape the tyranny of those in power. The trio are drawn to an untamed frontier town with a bright future, but a past soaked in the blood of those that came before them. There they unwittingly encounter an ancient evil that has lurked for centuries; a remnant of a war fought long ago, a solitary creature twisted by darkness, who seeks to bend their lives to his will. Their only hope is an orphan boy, whose very heritage may be the key to their salvation, but he has troubles of his own... Son of the sixth is a story of the ties that bind, of friendship and family, and the power of forgiveness.