Medea trades her body and soul to the demon goddess Circe in exchange for leading her, Hero, Daedalus and Oracle to the door of Olympus. As they make their dangerous trek, they are sidetracked by deadly Fates and the trickster god Hermes.
Hero, trapped in the frozen palace, has a chilling vision of Gaia informing him that he'll die if he attempts to enter Olympus. Trying to escape this fate, he comes to the realization that in order to survive he'll need Medea's faith in the gods, Daedalus' scientific genius and Oracle's visionary gifts.
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.
Hero and Ariadne develop feelings for one another during their journey to Olympus. Meanwhile, Lykos and Aegeus are back in Athens being held in dank prison caves where they must hide their identities, or suffer the terrifying rage of the other inmates.
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.
Hero learns the only way to unlock his destiny is by taking the life of someone he loves when he and Medea travel to the Temple of Aphrodite; at the same time, Medea's sister, a Magi warrior and cold-blooded killer, shows up to reclaim her sacred ring.
Medea and Aegeus work to persuade Hero to solve the riddle of the Lexicon in hopes that he'll use his power to save Athens. However, Hero's skeptical of their true intentions and unsure of the course of action he should take.
Hero makes his way to Athens to confront King Aegeus, only to be arrested and turned over to Prince Lykos, who has discovered Hero's identity and is out for blood. Back at the Minoan camp, Daedalus unveils his plans for the ultimate war machine.
Hero, Oracle and Daedalus are kidnapped by ruthless Minoans and brought before King Minos and his sadistic daughter Ariadne, who subjects the trio to vicious torture. Meanwhile, the situation in Athens grows more dire, compelling Medea to arrange for a mercenary to pull off a rescue mission.
Hero embarks on a daring journey to rescue the Oracle of Gaia from the cave of the Cyclops and then bring her safely to the temple so that she can answer the riddle of his life in the series premiere of this mythological drama set in Ancient Greece in a world where humans, gods and monsters interact.