The Dark Crystal is a 1982 dark fantasy film directed by Jim Henson and Frank Oz. It stars the voices of Stephen Garlick, Lisa Maxwell, Billie Whitelaw, Percy Edwards, and Barry Dennen.

The plot revolves around Jen and Kira, two Gelflings on a quest to restore balance to the world of Thra and overthrow the evil, ruling Skeksis by restoring a powerful broken Crystal.

https://en.wikipedia.org/wiki/The_Dark_Crystal