Return to Thundera - Part IV
Return to Thundera - Part IV - Title Card
Episode 4.04
Original Airdate September 7, 1989
Writer(s) Peter Lawrence
Previous Episode Return to Thundera - Part III
Next Episode Return to Thundera - Part V
All Episodes Episode Guide

Return to Thundera - Part IV is an episode from the original series of ThunderCats. Written by Peter Lawrence, it originally aired on September 7, 1989.

ThunderCats Bullet Point SummaryEdit

Mumm-Ra sends Ma-Mutt, disguised as Mandora, to free the Mutants from the Circus Train. He then sends them to Third Earth to eliminate Tygra and Pumyra.

ThunderCats Bullet Point StoryEdit

Inside the Great Beneath, the ThunderCats are struggling to stabilize the Mighty Gyroscope. Panthro and Bengali try their best to fix the massive machine but are unable to do so because they know very little about the actual mechanics of the Gyroscope. Bengali fashions a replacement for the regulator but it fails as the Gyroscope swivels wildly.

The erratic motion of the Gyroscope causes a massive tremor and gravitational disturbance at the construction site of New Cats Lair. The mayhem results in Snarf getting pinned under a giant boulder. Alerted about Snarf’s situation by the Sword of Omens, Lion-O rushes to the rescue. He is joined by Cheetara, Lynx-O and Torr and together they are able to free Snarf.

Meanwhile inside the New Black Pyramid, Mumm-Ra is confident that with the Gyroscope’s regulator in his possession, it is only a matter of time before the Gyroscope fails entirely, destroying New Thundera and the ThunderCats with it. He thus turns his attention to Tygra and Pumyra, the only ThunderCats left on Third Earth. He devises a scheme to employ the Mutants to destroy them and sends Ma-Mutt to carry out the plan.

Flying through space, Ma-Mutt takes on the guise of Mandora and intercepts the Circus Train in which the Mutants are imprisoned. He casts Captain Bragg and Crownan out of the ship before piloting it to Castle Plun-Darr. Once they reach Third Earth, Ma-Mutt frees the Mutants and a hologram of Mumm-Ra instructs them what to do. Glad to be free and back home, the Mutants oblige.

Piloting their vehicles, the Mutants first head to Hook Mountain to eliminate Snowman. As the Lord of the Snows comes under fire from the Mutants, Snowmeow fetches Pumyra and Tygra and together they succeed in defeating the Mutants and imprisoning them in the Circus Train. During this time, the real Mandora rescues Captain Bragg and brings him safely to Third Earth.

Back on New Thundera, Bengali and Panthro report to the other ThunderCats that they have managed to gain temporary control over the Gyroscope by means of a replacement regulator. However, it won’t last long and they have to seek out the real regulator before it’s too late. The episode ends with Mumm-Ra destroying the regulator by throwing it in the magical bubbling waters of his cauldron.

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ThunderCats Bullet Point MediaEdit

This episode was released on the following media:


ThunderCats Bullet Point Episode ScreenshotsEdit

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ThunderCats 1980s - Episode Guide - Season 4
Return to Thundera - Part I | Return to Thundera - Part II | Return to Thundera - Part III | Return to Thundera - Part IV | Return to Thundera - Part V | Leah | Frogman | The Heritage | Screwloose | Malcar | Helpless Laughter | Cracker's Revenge | The Mossland Monster | Ma-Mutt's Confusion | The Shadowmaster | Swan Song | The Touch of Amortus | The Zaxx Factor | Well of Doubt | The Book of Omens Tygra
Seasons Season 1 | TV Movies | Season 2 | Season 3 | Season 4 | Full Episode List
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