Hidden by a Scottish river bank in the winter of 1767, Lizzie Hallim watches a naked figure emerging from the icy water. Mack McAsh is a slave and Lizzie is helping him escape. Mack challenges the mighty Jamisson family, which enslaves whole families to work their mine. Mack soon finds himself wrongly sentenced to death. Rescued from hanging, he is transported to America, where he continues to struggle for freedom.