Hercules and the Circle of Fire is a made-for-TV movie. It was the third of five pre-series movies so it may be considered part of the TV series Hercules: The Legendary Journeys.

When all the Earth's fire begins to go out, Hercules and Deianeira must go in search for fire to stop the world from becoming frozen.

Hercules is walking through a snowy mountain top where he finds a woman in the cold, and goes to help her. He sees Zeus in a cave and a rock closes over the entrance. Hercules turns around and the woman calls out to him and freezes and explodes. Hercules wakes from a dream. He turns over and goes back to sleep. As he sleeps his camp-fire goes out. Next day Hercules and young man are walking through a cave with dead bodies strewn all over. The man tells Hercules that they are all men from his village and that the witch who guards the Fountain of Youth killed them for their youth and strength. At the heart of the cave they find an old woman. Hercules sees she is chained up, and is hit over the head by the man, who is actually a warlock. He says to Hercules he will now have Hercules' strength. Hercules and the warlock fight and the warlock appears invincible, but then Hercules notices a beating heart among the items in the warlock's cave. Hercules rips the warlock's shirt and sees that the heart belongs to the warlock. Hercules takes a knife and plunges it into the heart and kills the warlock. With the warlock now dead, the old woman reverts to her true form, that of a young woman. Hercules frees the woman from her chains and takes some water from the fountain. After this the fountain begins to boil and begins dissolving everything in the cave. Hercules grabs the woman and they leave the cave. Outside the cave Zeus appears and Hercules tells Zeus the water will cure Chiron of his wound. Later Hercules arrives at Chiron's house, he gives him the water and he drinks it. The wound heals, but after a few seconds the wound worsens. Hercules tells him he will find a cure for his wound. Meanwhile, all over the village fires are being inexplicably extinguished. Hercules and Chiron are talking by the fire side and the fire goes out. Hercules realizes that something is amiss. He decides to investigate. He approaches Hera's temple which still has fire. A woman is trying to persuade the priest of the temple to let them light their torches, the priest refuses. Hercules kicks down the door, Hera's priest fight him, he beats them, and lights the torch. Three women appear and tell Hercules that the torch is of no use, because Hera has stolen the Eternal Torch and plans to kill mankind once and for all. Hercules knows that humans cannot survive without fire, and if he does not get the Torch back all life will die. Later on the woman from the temple comes to Chiron, it is revealed she is Deianeira. Chiron says only Hercules can help her and points her the man from the temple. Hercules says they need to talk to Prometheus, so he and Deianeira set off. They find Prometheus frozen, he says that Hera has stolen the Eternal Torch and that Hercules must get it back. Hercules and Deianeira travel onto Mount Aepion, where Hera has the Torch. While traveling, Hercules is attacked by a giant named Antaeus and with the help of Deianeira manages to kill him.

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