Zandor and Dorno rescue a man floating down a river. A villain has taken over his home on Gravite Island./Malak drives his new force of Metal Apes against the Sea People. The Herculoids intercept them.
In a quest for power, Krokar leads his birdlike Beaked People to attack the flying monkeys. It's a trap to capture Zandor and assume rule of the planet. A space raider planning to loot Amzot kidnaps Tara.
Konar is siphoning the atmosphere. Zandor follows the wind to find him who brings out the Zorbots./Volton and the Electrode Men fly their spaceship into a volcano where they aim to take over the world.
Amzot is bombarded by missiles from planet Luvanuum. The Herculoids travel on a captured ship./A giant fly kidnaps Tara. It's Torrak and he has enlarged his microorganisms.
The Reptons have captured Tara and brainwashed her to be their evil queen./Zandor is poisoned by a giant spider bite. Dorno seeks the antidote from the Spider People.
Space pirates are burying their treasure on Amzot when Dorno stumble upon them with Igloo and Tundro./Sarko captures Igoo for experimentation. He knocks out Zandor with gas. Then he captures Dorno and Tundro.
Queen Skorra distracts Zandor with a monster as her robots surround Tara and Dorno in a plan to exile them./Amak and the Amatons try to place control collars on Tundro and Igoo. The Herculoids battle various animals under their control.
Neron captures the Herculoids to fight gladiatorial battles in his arena./The Temple of Trax seems to be abandoned. In reality, the high priest has a plan to kidnap Tara and sacrifice her for the return of Trax after 2000 years.
Mole men led by Marcon are invading the surface in their machines./The Herculoids rescue a lost Dargyte child from a vulture. They must return him to his home in the dark side of the planet.