Emmy nominee Jeffrey Tambor and David Alan Grier are the latest stars to join ABC's Muppets' Wizard of Oz.

Tambor will star as the Wizard in the movie, while Grier will play Dorothy's Uncle Henry.

The film follows Dorothy Gale (Ashanti), who works in a diner owned by her Aunt Em (Queen Latifah).

One day, a tornado sweeps her up, and she finds herself in the Muppet Oz, where she meets the Scarecrow (Kermit the Frog), the Tin Man (Gonzo) and the Lion (Fozzie). Eventually, they end up in a battle against the Wicked Witch (Miss Piggy).