She-Ra: Princess of Power (1985)

S1E29 The Price of Freedom

Adam is dispatched to Etheria by the Sorceress, for He-Man’s strength is crucial to She-Ra’s defense of Dryl’s villagers. These people are being coerced into laboring within the Etherium mines, their lives and freedom held hostage by the oppressive Evil Horde. The twin forces of Grayskull must unite to break this tyrannical grip and liberate the enslaved miners from their dark, forced servitude.