Saving Mr. Banks
Walt Disney wants to use the book Mary Poppins for a movie but the author, P.L. Travers doesn't like what Disney does. So for 20 years Disney would keep asking her to let him do it. Eventually when she's financially strapped she considers it but won't approve unless Disney does it as she wants it. So she goes to California and Disney and his team who work on bringing the character of Mary Poppins to life try to show her what they did. But she's not easily impressed. Even Disney tries to understand what she wants.