By Devan Coggan
May 21, 2015 at 04:03 PM EDT
Trisha Leeper/WireImage

Forget the Avengers or the Fantastic Four. The biggest superhero movie of the summer is almost here, and it stars a pint-sized hero.

The official trailer for the documentary Batkid Begins is here, and it tells the story of Miles Scott, a then-5-year-old leukemia survivor who donned a cape and made headlines back in 2013. His family reached out to the Make-A-Wish Foundation, which recruited a few hundred people to transform San Francisco into Gotham. But as Batkid traveled around the city, fighting crime and stopping supervillains, the rest of the world tuned in on social media, and as Batkid’s story went viral, everyone from Christian Bale to Barack Obama chimed in to wish the miniature caped crusader well.  

Batkid Begins will be released in select theaters June 26.  

Trisha Leeper/WireImage