
The Mutants ambush the Thundercats, but lose the battle -and a NoseDiver. Slithe blames Vultureman's faulty technology for the loss of the vehicle. Vultureman, enraged, activates a self-destruct circuit in their weapons. Acting on Slithe's request, Mumm-Ra evens the score by sealing the Sword Chamber with the Sword and all the Thundercats' weapons inside. Using primitive weapons, the Mutants attack the Cats' Lair, overpowering Cheetara and then Panthro -but not before Panthro realizes that an air-shaft will grant access to the sealed Sword Chamber. Snarf crawls through the air-shaft, pursued by Jackalman. Meanwhile, Lion-O fights Monkian and Slithe hand-to-hand but is weakened when Mumm-Ra appears and engulfs him in a force field. Snarf arrives with the Sword. Lion-O uses it to free the other Thundercats. Together they defeat Mumm-Ra and the Mutants.
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