Last November, the Make-A-Wish foundation and the city of San Francisco joined forces to make one 5-year-old’s dreams come true.

Miles, a cancer patient whose leukemia is now in remission, spent an entire day pretending to be Batman while over 25,000 people played along.

San Francisco was turned into Miles’ very own Gotham City. And now, there’s a trailer for a documentary, Batkid Begins, about “what happens when an event goes unintentionally viral.”

The events surrounding Batkid are a reminder of all the good that can happen when human beings come together.  Check it out...