This episode traces Alexander's beginnings and reveals how a young prince shaped by ambition, myth, and powerful parents grew into a leader ready to challenge the world's greatest empire.

Alexander's campaign moves south; he uses religion, symbolism and strategic diplomacy to secure loyalty in Egypt, presenting himself as pharaoh and restoring temples neglected under Persian rule.

Alexander confronts the final unravelling of Darius' power; determined to secure his place as Darius' successor, he adopts the administrative strengths of the Persian Empire.