Directed by Sam Raimi, the film is a step back in time to the days before Dorothy. Oscar Diggs, a circus magician portrayed by Franco, ends up in the magical land of Oz when his hot air balloon gets caught up in a tornado. Obviously.
Franco has to defeat the wicked witch and restore peace in Oz, whilst the three good witches, otherwise known as Mila Kunis, Michelle Williams and Rachel Weisz, fight over him and pretend it's for the good of the land and not just to get in his pants. We're not buying it.
The full-length trailer is out now, and you can check it out here: