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.