Return to Thundera Episode III.Lion-O, Panthro, and the ThunderKittens take the Whisker, a new flying vehicle, to the Churning Rocks to rescue the Thunderian refugees who called them from there. The ThunderCats get captured by Two-Time, a robot with two heads. Two-Time takes them aboard his spaceship, Dome-Down, and the ThunderCats see that he has also captured the refugees. Lion-O defeats Two-Time and the refugees are freed. Meanwhile, Lynx-O, Cheetara, and Bengali spot Mumm-Ra near the Churning Rocks, and inform Lion-O of this. Lion-O, Panthro, and the ThunderKittens head to the Churning Rocks and confront Mumm-Ra, who is again in the form of Jaga.