Hercules, with the help of the Amazon Ephiny, the Centaur Nagus and a youth marked for murder, must stop a volcano from destroying the people of Mount Pelion.

Hercules travels to the parallel Netherworld to rescue the gods of Olympus before both worlds are destroyed.

Hercules reminisces about a typical day filled with desperate villagers and derring-do with his late friend, Iolaus.