Led by their young leader Lion-O, the Thundercats forge a new home on Third Earth. But as they rebuild their lives, the vile Mumm-Ra and the Mutants at Castle Plundarr plot to annihilate the Thundercats' fledgling civilization. Mystical mind games, mechanical monsters and outright evil plans - these are the daily battles our feline-inspired heroes endure. And as the Thundercats war with their vicious enemies, Lion-O must pass five trials to prove his birthright as ruler and the rightful owner of the powerful Sword of Omens.

Hear his battle cry in these 32 episodes totaling more than 11 hours of classic cartoon adventures across six discs!