The races of Third Earth were unprepared for Mumm-Ra's sudden assault, and even more unprepared for the turn it took... for the treacherous villain had mastered not only technology, but necromancy as well!

If there is any hope of survival, the ThunderCats must battle their age-old enemy and his zombie hordes for control of Thundera. Aided by powerful artifacts and a fearsome resolve, the ThunderCats are ready to show their claws, and the fight between good and evil rages on!