Return to Oz is a 1985 dark fantasy film released by Walt Disney Pictures, co-written and directed by Walter Murch. It stars Nicol Williamson, Jean Marsh, Piper Laurie, and Fairuza Balk as Dorothy Gale in her first screen role. The film is an unofficial sequel to the 1939 Metro-Goldwyn-Mayer film The Wizard of Oz, and it is based on L. Frank Baum's early 20th century Oz novels, mainly being a combination of The Marvelous Land of Oz (1904) and Ozma of Oz (1907). In the plot, an insomniac Dorothy returns to the Land of Oz to find it has been conquered by the wicked Nome King and his accomplice Princess Mombi. Dorothy must restore Oz with her new friends Billina, Tik-Tok, Jack Pumpkinhead, and the Gump.