Panthro invents flying video cameras which are suppose to record the events that take place on third-earth so they could create their own holographic time capsule. Mumm-Ra, in hope of destroying the Thundercats once more, revives the great mechanical monsters which the Thundercats have destroyed in the past to attack them. He revives the Mutant War robot, The Driller, The Giant Insect, and the Techno-Pede.