Dorothy and Toto return to the Magical Land of Oz. The Scarecrow is now king of the Emerald City and an old Witch named Mombi, cousin of the Wicked Witches of the West and East, is trying to take over Oz and overthrow the Scarecrow with her army of angry green elephants.
It featured a distinguished vocal cast:
- Liza Minnelli as Dorothy Gale
- Mickey Rooney as the Scarecrow
- Danny Thomas as the Tin Woodman (speaking)
- Milton Berle as the Cowardly Lion (speaking)
- Rise Stevens as Glinda
- Ethel Merman as Mombi
- Margaret Hamilton as Aunt Em
- Paul Ford as Uncle Henry
- Larry Storch as Amos (Aunt Em and Uncle Henry's farmhand) / Tin Woodman (singing)
- Jack E. Leonard as the Signpost
- Paul Lynde as Pumpkinhead
- Herschel Bernardi as Woodenhead Stallion III / Cowardly Lion (singing)
- Mel Blanc as Mombi's crow
The soundtrack was released six years later in 1980. The songs were:
- A Faraway Land: Dorothy
- Signpost Song: The Signpost
- Keep A Happy Thought: Dorothy
- The Horse on the Carousel: Woodenhead Stallion III
- B-R-A-N-E: Scarecrow
- An Elephant Never Forgets: Mombi
- H-E-A-R-T: Tin Man
- N-E-R-V-E: Cowardly Lion
- You Have Only You: Glinda
- If You're Gonna be a Witch - Be a Witch: Mombi
- Return to the Land of Oz March: Dorothy
- That Feeling for Home: Dorothy
- Princess Snow-White from the 1993 film Happily Ever After also made by Filmation Studios bears a striking resemblance in her design to Dorothy's animated counterpart in that film.
- Jack Pumpkinhead is a primary character, but is only ever referred to as "Pumpkinhead" and never as Jack.
- The Signpost is similar to the Postman who appears in Ruth Plumly Thompson's The Purple Prince of Oz, however it is unlikely that the animated character was directly inspired by this obscure piece of trivia.
- Actors Mickey Rooney, Milton Berle, Ethel Merman, and Paul Ford all appeared in the 1963 comedy film It's a Mad Mad Mad Mad World.
- Rooney appeared together with Judy Garland in a number of movies when they were teens in the 1930s.
- Mel Blanc, the voice of Mombi's crow, voiced the Sawhorse in Shirley Temple's Land of Oz (1960).
- Mombi is indeed the cousin of the Wicked Witches of the West and East and the Jester, Singra is their cousin as well, it is classified that Mombi and Singra are sisters.