Sinbad returns from the sea to find his country subjected to the will of two unscrupulous sorcerers.
Hercules searches for the Seven Thunderbolts of Zeus, which have been stolen by renegade gods.
Hercules, a semi-divine being, squares off against King Minos, who is attempting to use science to gain power and take over the world. With the help of a benevolent sorceress, Circe, Hercules tries to save his beloved Cassiopeia from being sacrificed by Minos, and struggles against laser-breathing creatures and an evil sorceress.
