King Minos invades Athens with the intent of killing the royal family, but instead strikes a bargain with Hero to spare their lives in exchange for the Lexicon. Meanwhile, Hero devises a bold plan that will either set him on the road to Olympus, or lead to the demise of everyone he holds dear.

Oracle discovers the truth about the Lexicon, while Hero attempts the dangerous deeds needed to fulfill his destiny. After Pandora's tomb is opened, Hero and Medea rush back to the safety of the palace, where King Aegeus engages in a battle to the death.