Hercules, overcome by grief at Iolaus' death, travels to the underworld in hopes of getting him back.

In Sumeria, Hercules finds a new evil in the guise of a friend.

Hercules attempts an exorcism to save Iolaus' soul from the demon Dahak.

Hercules must help Oedipus and his daughter, Princess Antigone, battle the evil King Creon.