Jim Henson's The power of the dark crystal. Volume three
"After the arduous journey across the strange lands of Thra, Thurma has returned to her homeworld of Mithra. Just as when she began her journey she is alone, having betrayed her only ally. But as Thurma attempts to cast aside her guilt and affection for Kensho to complete her mission, the two are reunited. Kensho has not given up hope that their worlds might both be saved. If Thra and Mithra are to coexist, these unlikely heroes will have to reco...