The goddess Hera discovers the existence of Zeus's bastard son Heron and vows revenge. The polis falls to the forces of the malevolent Seraphim.

Heron is taken captive by the army of Seraphim, who chases Alexia but instead encounters Hera. The goddess informs the demon leader of his true past.

Hera directs Seraphim to the powerful sword Zeus once forged for Heron, who is enslaved aboard a galley. Alexia seeks counsel from her mentor, Chiron.

Zeus brings Heron to Olympus for training, angering the other gods. Alexia embarks on a mission to Melidoni with Heron's companions, Evios and Kofi.

Hera resurrects the giants of the sea and assails Olympus, leading to an earth-shattering battle for the ages and the rise of a new demigod: Heron.