The Berbils, in return, decide to help the Thundercats build their new Lair. Then Lion-O defends the village again from Mumm-Ra, who had turned into a huge insect. Lion-O helps defend the Berbil village from an attack by the Trologs, who are trying to get the Berbils' food. Meanwhile, Lion-O and Snarf get captured by the Ro-Bear Berbils, who turn out to be friendly. But the Thundercats hide in the new Thundertank that Panthro has built. Mumm-Ra tries to destroy the other Thundercats with a rock storm while Lion-O and Snarf are out searching the woods. Then Mumm-Ra tries, but while he is battling Lion-O, he sees his reflection in Lion-O's claw shield, and Mumm-Ra is so horrified by the reflection, he has to fly away and thus is defeated. The Mutants try first, but Lion-O holds them off. The Mutants, who are now stranded, team up with Mumm-Ra to try and get the Eye of Thundera from the Thundercats. Mumm-Ra sinks the Mutants' space ship, in fear they might use it to call the other mutants and then destroy his pyramid with it. The mutants, who followed the Thundercats to Third Earth, meet Mumm-Ra, a being of immense evil. Lion-O, the new lord of the Thundercats, goes from boyhood to manhood during the trip. Jaga manages to get them there, but he dies just before reaching the planet. The damaged ship is now unable to make it to that planet, so while the other Thundercats sleep in Time-Suspension capsules, Jaga pilots the ship manually to Third Earth. The set a course for a distant planet, but on the way they are attacked by the Mutants from the planet Plun-darr. The Thundercats, Jaga, Panthro, Tygra, Cheetara, Lion-O, Snarf, and Wiley Kit and Wiley Kat, watch from a spaceship as their home planet, Thundera, blows up. Relive the magic of '70s and '80s tv, only here at Nostalgia Manila!

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