Watch the Inspiring Trailer for “Batkid Begins”

Trisha Leeper/WireImage(SAN DIEGO) — Now, more than ever, the world could use a superhero. In November, the city of San Francisco got one. His name is Miles Scott and he had yet to start kindergarten.

Thanks to the Make-a-Wish Foundation and the participation of thousands of enthusiastic locals, 5-year-old Miles, who had recently completed chemotherapy treatment for leukemia, spent that fall day racing through city streets to rescue damsels in distress, disarm explosives and defeat his arch-nemeses.

Over 7,000 onlookers came out to cheer Miles on as he patrolled San Francisco in a pint-sized Batman outfit. More than 400,000 people participated in the unprecedented phenomenon on Twitter.

But while the raw footage captivated the nation, filmmaker Dana Nachman wanted to go behind the scenes to find out more. Nachman has been working on a documentary since January.

On Sunday, she premiered the trailer for Batkid Begins at Comic-Con.

“There’s a lot of reasons not to do things that are crazy and big,” Nachman told ABC News. “But here were a lot of people who said, ‘Let’s not be safe for a day. Let’s go crazy and be a little absurd.'”

Nachman cited the spirit of creativity that is characteristic of the City by the Bay as a possible explanation for the reaction that the spectacle prompted.

“It was this big fantasy for everybody,” Nachman said. “It was as much a fantasy for everybody on the ground as it was for Miles.”

The project has launched an Indiegogo campaign on July 15 to help finance the feature film. Over the next three weeks, it hopes to raise $100,000. Nachman plans to finish a rough cut of the movie in time to coincide with the anniversary of the event.

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