Forget all those fictional superhero movies for a moment and prepare yourself for a real-life superhero story that's also one of the year's most heartwarming tales.

Yes, we're talking about Batkid, aka Miles Scott, a little boy who was battling his way through cancer and only had one wish: to become Batman... for real. What happened next was pretty extraordinary, and you get a sense of that from this first official trailer for the documentary Batkid Begins.

We had a chance to see Batkid Begins earlier this year and were pretty floored by how uplifting and inspiring the movie turned out to be. Like we said in the title, you have no idea how good this movie will make you feel.

From our review: "In an age where news reports thrive on the awful things happening around the world, to watch thousands upon thousands of strangers come together to support one kid's wish is an experience you need and one you'll cherish."

Batkid Begins hits select theaters on June 26.