The five-year-old cancer survivor who sent his request to the Make-A-Wish foundation to be Batman for a day is getting his own documentary. Miles Scott, a leukemia survivor, got to be the caped crusader for a day when he donned a tiny bat suit and went around "Gotham city" to be a superhero.

San Francisco was Gotham city for a day as the Make A Wish Foundation transformed it to be the stomping ground for the miniature Batman. Thousands of people came out to support and cheer on the small superhero last November 2013, with many carrying placards and banners saying "Save Me Batkid!" Reports say that the crowds swelled up to 25,000.

There were victims to be saved, villains to be fought, a bat mobile to be driven, and various other dramatic elements that made Miles Scott's dream come to life.

And now Emmy Award-winning filmmaker Dana Nachman will be releasing a documentary of Miles Scott's story. The first official trailer for Batkid Begins has been released, and it features Miles' parents, Dark Knight composer Hans Zimmer, and the people at Make A Wish foundation that worked hard to make Miles Batman for a day.

Nachman made a guest appearance on the show "America's Newsroom" to promote the movie and talk about the amazing young boy who was the subject of Batkid Begins.

"Just to be able to work on something so positive for the next year was a dream come true for me," she said.

"When you get a wish from the Make-A-Wish foundation, you could get anything... but he just chose to be Batman for the day and have good conquer evil," Nachman adds. "That's an amazing thing for a child to want."

The documentary Batkid Begins is targeting a November 15 release date, to coincide with the anniversary of Miles Scott's Batkid experience. In the meantime, see the trailer here: