Thundarr, Ariel and Ookla meet and old man who is attacked by the rat-like groundlings when Thurdarr tries to deliver a black pearl said to be capable of defeating the wizard Gemini to the village of Manhat (formerly known as Manhattan).
Thundarr, Ariel and Ookla struggle to free themselves from the Carocks, a warrior race of humanoid crocodiles, and stop the Carocks from delivering a shipment of Death Flowers -- the pollen from which can weaken a person's will -- from reaching an evil wizard.
The wizard Mindok, who lost his body more then 2,000 years ago and exists only as an immortal disembodied brain, frees cryogenically frozen scientists from old Earth, intending to force them to build him a robotic body.
Thundarr helps a human settlement defeat attacks by groups of mutants led by the evil wizard Morag, who kidnaps the villagers to steal their essence for his nefarious schemes.
Thundarr battles the Queen of the River Pirates, who are intent on finding the legendary treasure of the Moks even if that means destroying the Moks and their village.
When the wizardess Striya overthrows the Amazon queen, Thundarr, Ariel and Ookla help the Amazons fight Striya's army of sharks to regain control of her kingdom and prevent the wizardess from conquering Earth.
Charles A. Nichols
Director