One day, other vengeful gods (Aphrodite, Hera, Poseidon, and Flora) stole these lightning bolts to create chaos.

As the humans on Earth begin to suffer, two sisters named Urania and Glaucia speak to the Little People and learn that only Hercules can save them now.

After hesitation, Zeus finally decides to send Hercules back from the stars to Earth to aid the humans, but the vengeful gods resurrect their own warrior, King Minos.

Meanwhile, as the four gods resurrect King Minos, Hercules teams up with Glaucia to rescue her sister Urania from hideous monsters, called the Slime People.

Hercules and the two sisters sail to an island and enter an old, haunted forest with strange human dolls hanging from the trees.

He is then attacked by a demonic sorcerer-knight, but Hercules overwhelms the knight and impales him onto a poisonous thorn branch, revealing the third thunderbolt.

Urania then rescues her while Hercules battles Antaeus, summoned by the priest, and defeats him by throwing him around the Earth until he crashes into the sea, also revealing the fourth thunderbolt.