Hercules (Kevin Sorbo) endeavors to save the citizenry of Mount Pelion from an erupting volcano. He is joined in this mission by Amazon queen Ephiny (Danielle Cormack), the centaur Nagus (James Gaylyn), and a youth named Kurth (Jonnno Roberts) -- who has been condemned to death for the murder of Nagus's son. The climax brings into play the energy crystals introduced in the fourth-season finale "Atlantis," not to mention a conspicuous act of redemption and self-sacrifice. ~ Hal Erickson, Rovi