Christopher Columbus sets out in 1502 on a fourth transatlantic crossing, ten years after the voyage that made him famous, hoping to salvage a reputation ruined by mismanagement charges that had once left him facing execution in a Caribbean prison. The film follows this final expedition as storms, hostile waters, and the wreck of his ships strand Columbus and his crew, eventually marooned for months with no way home. It reconstructs the practical crisis of a stranded fleet: dwindling supplies, mutiny among the men, and the desperate measures taken to get word out and secure rescue. Rather than the triumphant discovery narrative usually attached to his name, this is Columbus at his lowest, an aging admiral out of ships, out of credit with the Spanish crown, and running out of time. The four lost vessels anchor the story in a concrete disaster rather than legend, tracing how the voyage that was meant to restore his standing instead became his last.