Relive Batkid's big day with trailer for Batkid Begins

In fall of 2013 five-year-old Miles Scott captured the heart and imagination of America as the city of San Francisco was transformed into Gotham so that he could assume the role of Batkid.

In the fall of 2013, 5-year-old Miles Scott captured the heart and imagination of America as the city of San Francisco was transformed into Gotham so that he could assume the role of Batkid.

Miles had been diagnosed with leukemia and told the Make-A-Wish foundation that his dream was to be "the real Batman" for one day, and the charity, along with thousands of volunteers and the city of San Francisco, stepped up in ways the Scott family had never anticipated.

The pint-sized crime fighter's big day included taking on classic villains like The Riddler and The Penguin and ended with him driving the Batmobile into a massive rally at AT&T Park, home of the San Francisco Giants.

Now a documentary about the big day will be hitting movie screens around the country in June, and the first trailer has been released online, showing the behind-the-scenes effort it took to make the dream come true.

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- Brendan Maloy