Arciana and a group of criminals break out of prison to search for the Sword of Hera. Kevin Sorbo's real-life wife Sam Sorbo reprises her role of Serena -- sort of. Hercules realizes this isn't his Serena. This being calls herself "Sin" and says she wants to help recapture Xerxos, who escaped from her realm of punishment. Hercules reluctantly accepts her power and gradually becomes more vicious as they continue to pursue Xerxos and Arciana. Can Iolaus uncover Serena's hidden agenda in time to save Hercules?
The shade of Oedipus' wife/mother Jocasta threatens him with continued suffering unless their daughter Antigone is made queen of Thebes. But Antigone, heartbroken and bitter, is more interested in drinking herself to death.
Queen Nefertiti of Egypt wants a peaceful alliance with Greece, but her children want to revive Egypt's warlike history. When her son Ramses is convicted of treason but set free by his mother, he goes after the Necromicon in the City of the Dead.