Break out the tissues, folks. Warner Bros. has released the first Batkid Begins trailer for the upcoming documentary about the “Batkid” event that made one leukemia-stricken 5-year-old's wish come true. If for some reason you’re unfamiliar with the story, the Make-A-Wish foundation fulfilled a boy named Miles’ wish to be Batman for a day. The event went viral, as thousands showed up in San Francisco to watch Batkid’s dream play out in real life, as he went about saving victims and catching The Riddler.

The documentary, directed by Dana Nachman, chronicles how this one Make-A-Wish fulfillment became a worldwide phenomenon, touching millions of people across the globe. The trailer may or may not make you a bit verklempt, but I am curious to see how much the film actually delves into Miles himself as opposed to just focusing on how the event impacted strangers.

Watch the first Batkid Begins trailer below via Warner Bros. The film will open in select theaters on June 26th.

Here’s the official synopsis for Batkid Begins:

On one day, in one city, the world comes together to grant one 5-year-old

cancer patient his wish.

The documentary “Batkid Begins” looks at the “why” of this flash phenomenon.

Why did the intense outpouring of spontaneous support for a child

reverberate around the world and become one of the biggest “good news

stories” ever?

The film explores what happens when an event goes unintentionally viral, and

reveals surprising truths about what happens when a nerve is touched in our

digital society. Will Make-A-Wish fulfill its mission to help Miles reclaim

his childhood after battling disease for more than half his short life?

In the end, the film leaves audiences to decide; did Miles need the world

for inspiration? Or did the world need Miles?