Hercules (Kevin Sorbo), Morrigan (Tamara Gorski) and Nebula (Gina Torres) return to Greece to find the evil god Dahak. When they arrive in the town of Corinth, there is an almost carnival-like atmosphere. Antibius (Stephanie Liebert) approaches Hercules and tells him that while Hercules was gone, the Olympian gods abandoned the people. When they were on the brink of ruin, a native son returned to guide them. As they talk, Hercules is recognized and pandemonium breaks out. Iolaus (Michael Hurst), possessed by Dahak, appears and assures the people of Corinth that he will deliver them from the wrath of Hercules. Urged by the people's pleas to leave, the three retreat to the woods. While Hercules sends Morrigan and Nebula out to find out what happened while he was gone, he goes to see Jason (Jeffrey Thomas). Although Jason is convinced that Hercules has killed the Olympian gods, Hercules convinces him that Dahak has been lying to everyone. Jason tells Hercules that he can find Iolaus in any of the temples that have been converted into shrines to Dahak.
Hercules enters a temple and is confronted by Iolaus, who once again tries to convert Hercules into a believer. Hercules refuses and Iolaus attempts to get Hercules to kill him. When Hercules refuses, Iolaus disappears. Hercules leaves the temple and regroups with Morrigan and Nebula. Hercules tells them that Dahak wants to make the world like it was before the gods. He sends Morrigan and Nebula to find Dahak's stronghold, while he tries to find the beings that ruled the earth before the gods, the Titans. Hercules goes to a volcano and summons Mnemosyne (Donogh Rees), one of the Titans imprisoned by Zeus. Mnemosyne tells Hercules that he must find the Stone of Creation and confront Dahak with it at dawn. The stone will harness a pure light that will render Dahak powerless long enough for him to be sent back to his realm.
Hercules leaves the volcano and is approached by Zarathustra (George Henare), a man condemned to immortality by Dahak for resisting the Dark One's teachings. Hercules learns from Zarathustra that if he kills Dahak, he condemns Iolaus' soul and destroys the world. Meanwhile, Nebula goes to a temple and is greeted by Iolaus. She tries to resist him, but is mesmerized by him. While Jason and Morrigan walk through Alcmene's garden, they are approached by some of Iolaus' warriors. They ward off the thugs, but Nebula appears and knocks Morrigan unconscious.
Morrigan awakens to find Jason and herself imprisoned in Dahak's fortress. Jason escapes, but Morrigan is handcuffed and taken to the altar. Meanwhile, Hercules is convinced that he can separate Iolaus' soul from Dahak and send Dahak back to his realm, allowing Iolaus to rest in peace and restoring balance to the world. He and Zarathustra find the Stone of Creation, regroup with Jason and return to Dahak's stronghold. Inside, Iolaus gives Nebula the order to kill Morrigan. Fortunately, Nebula has been deceiving Iolaus about her trance-like state and cuts Morrigan free. At the same time, Hercules, Jason and Zarathustra burst into the fortress. With the team reunited, Hercules and the group fight their way through his followers to Iolaus. Dawn breaks and Hercules pulls out the stone to harness the light. Light chains spiral around Iolaus, assume metallic form and bind him to the altar. With his friends beside him, Hercules prepares to perform the exorcism.
Starring: Kevin Sorbo (Hercules), Michael Hurst (Iolaus/Dahak)
Guest Starring: Gina Torres (Nebula), Tamara Gorski (Morrgan), Jeffrey Thomas (Jason), George Henare (Zarathustra), Stephanie Liebert (Antibius), Robyn Duncan (Livia), Joseph Greer (Nikos), Graeme Moran (Professor), Danny Lineham (School Teacher), Matthew Van Den Berg (Warrior), Murray Dahm (Guard), Monique Joel (Woman Demon Convert)
Written by Gene O'Neill & Noreen Tobin
Directed by Robert Radler
Trivia: Let There Be Light and Redemption introduce the Christian incarnation of God into the Hercuverse.