The Man Within tells the story of Andrews, a young man who has betrayed his fellow smugglers and fears their vengeance. Fleeing from them, with no hope of pity or salvation, he takes refuge in the house of a young woman, also alone in the world. She persuades him to give evidence against his accomplices in court, but neither she nor Andrews is aware that to both criminals and authority treachery is as great a crime as smuggling.