ThunderCats (1985)

S1E14 The Spaceship Beneath the Sands

Title: The Vessel Hidden in the Dunes Plot: Frustrated by their ongoing defeats at the hands of the Thundercats, the Mutants enlist Mumm-Ra to unearth their long-buried spacecraft and reclaim their lost vehicles. As they plot their comeback, they hope to turn the tide in their favor and finally overpower their feline foes.