Hercules: The Legendary Journeys Season 5 Episode 2 Descent

Hercules decides to go to the Sumarian Underworld to try to bring Iolaus back from the dead. Nebula, who is in love with Iolaus goes with him and takes a group of her soldiers with her. After struggling to get to the underworld, Hercules confronts Dumuzi, the Sumarian god of the underworld. Dumuzi has been collecting souls to survive ever since the chalice of sacred nectar was destroyed. Hercules is told that Iolaus is gone forever leading Hercules to fight Dumuzi to the death.