The Spaceship Beneath the Sands is the 14th episode of the original Thundercats series. It originally aired on 26 September 1985.
The Mutants convince Mumm-Ra to raise their ship from beneath the desert so that they may build better weapons and vehicles to more effectively battle the ThunderCats.
The Mutants set a trap for the ThunderCats by first ambushing and stealing from a Tabbut. The cries of help from the Tabbut attract Cheetara and Tygra, just as the Mutants anticipated. As soon as the ThunderCats arrive at the scene, Monkian drops a sticky net on them and traps them. Inside the Cats Lair, the Sword of Omens warns Lion-O and he and Panthro set out in the ThunderTank to rescue their fellow Cats. Panthro maneuvers the tank's jaws to free Cheetara and Tygra from the net. The ThunderCats then turn their attention to the Mutants who quickly flee from the scene.
Inside Castle Plun-Darr, the Mutants are upset that they get constantly defeated by the ThunderCats. They concur that the reason for this is that while the ThunderCats were able to salvage most of their technology, the Mutants' technology lies buried beneath the Desert of Sinking Sands thanks to Mumm-Ra. They go to the Black Pyramid and eventually manage to convince Mumm-Ra to raise their spaceship. From the raised Mutant Mothership, the Mutants gather their equipment as well as SkyCutters and a NoseDiver and transport it all to Castle Plun-Darr.
Armed with new vehicles, the Mutants launch an attack on Cats Lair with Jackalman and Monkian piloting SkyCutters and Slithe driving the NoseDiver. Panthro and Lion-O decide to face the NoseDiver in the ThunderTank, while the rest of the ThunderCats try to attack the SkyCutters using the lair's Laser Beams. Slithe tricks Panthro into following him over a cliff and into the ocean. The NoseDiver, being amphibious, is able to easily navigate through the water but the ThunderTank sinks and gets wedged in an undersea canyon. Using diving equipment from under their seats, Lion-O and Panthro swim out of the tank and try to push the vehicle but Slithe returns on the NoseDiver and starts firing at them. Panthro then sets a trap for Slithe using a nearby cave which is the den of a Giant Eel. As Slithe tries to avoid the eel, the ends up damaging the NoseDiver's energy module causing it to stall.
Panthro and Lion-O swim onto the shore but are immediately greeted by a barrage of fire from the SkyCutters. Lion-O calls the other ThunderCats and he and Panthro head back into the sea to try and free the ThunderTank. Tygra, Cheetara and the Thunderkittens arrive swiftly and dispatch Monkian and Jackalman with ease. Back underwater, Panthro and Lion-O are attacked by a pair of Sea-Quines. Panthro is surprised at the unexpected aggressive behavior of these normally gently creatures. Lion-O then spots the reason, a baby Sea Quine who is trapped underneath the tank. Panthro and Lion-O try frantically to budge the tank but remain unsuccessful even with the help of the adult Sea Quines. Just then, Slithe returns on the NoseDiver to attack the Cats once again. Lion-O fires a harpoon from the tank and it attaches itself to the NoseDiver which ends up pulling the tank free and releasing the baby Sea Quine. With the NoseDiver damaged, Slithe retreats while Panthro and Lion-O drive the tank onto the shore to meet up with the rest of the ThunderCats.
Tygra: "Evil never sleeps".
Panthro: "We can always replace the Thundertank. No way we can ever replace a life".
- This is the second episode (out of four) in which Cheetara gets caught in a net. The previous episode being The Doomgaze and later episodes include Mongor and Snarf Takes up the Challenge.
Animation Mistakes and/or Technical Glitches
- When Cheetara is removing the glue from Tygra, the blue band on Tygra's left arm is missing.
- In two scenes Lion-O's forearm has the same color as his upper arm instead of it being lighter in color. First when he is riding the Sea-Quine and second when he and Panthro emerge from the sea.
- Near the end, when the ThunderCats are standing on the beach, the orange color on Tygra's nose is missing.
- Also near the end, when Lion-O and Panthro emerge in the ThunderTank, the ThunderCats insignia is missing from Panthro's belt.
Inconsistencies/Continuity Errors and/or Goofs/Oddities
- In the beginning, Lion-O is shown sleeping on his bed with the Sword of Omens and the Claw Shield near his bedside. However, in most other episodes, the two items are always shown to be kept in the Sword Chamber.
- In this episode, the ThundeTank sinks as soon as it plunges into the ocean yet in the episode The Terror of Hammerhand , the tank is shown to be able to travel perfectly underwater thanks to its "aquatic mode".
- Towards the end of the episode, Tygra mentions that the Mutants must have "raised their spaceship" somehow yet the Mutants were the only ones who witnessed Mumm-Ra sinking their ship in the episode The Unholy Alliance .
Jackalman: [pulling the saddlebag from under the Tabbut] It's heavy. Collections went well today, eh, pinch-penny?
Tygra: Cheetara, did you hear that?
Cheetara: Hear it? I'm halfway there.
Cheetara: You'll be wearing that grin on the back of your face when the other Thundercats get here, Slithe.
"Lord of the Snows"
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