Jim Henson's The Dark Crystal: Creation Myths Vol. 3

Following the events of The Great Conjunction, the once-powerful Urskeks have been split into two separate beings, the Skeksis and the Mystics. The only people who know the truth of the origins of these new creatures are Raunip and Aughra, who are trapped in the bowels of the world of Thra, searching for the shard of the Dark Crystal.