Mumm-Ra uses the Beacon of Ravage Island to make the Thundercats his slaves. When the beacon puts Lion-O, Panthro, Cheetara, and Pumyra under its power, they are easily captured by the Mutants, and Snarf must get the others at the tower for help, but Ben-Gali soon falls under the beacon's power and it's up to Lynx-O, Snarf and Snarfer, to save the "enslaved" Thundercats.
Elenco: Bob McFadden , Larry Kenney , Earl Hammond , Lynne Lipton , Earle Hyman , Peter Newman , Gerrianne Raphael , Doug Preis , Will Friedle , Emmanuelle Chriqui , Kevin Michael Richardson , Matthew Mercer .