Batkid Begins: The Wish Heard Around the World will have its world premiere in January at the Slamdance Film Festival.

The crowdfunded documentary chronicles the events behind the scenes on Nov. 15, 2013, when San Francisco was transformed into Gotham City to fulfill the wish of 5-year-0ld leukemia patient Miles Scott to be Batman. Although the Make-A-Wish Foundation expected a few hundred people to turn out to cheer on Batkid as he and Batman captured Penguin and the Riddler, the celebration drew an estimated 14,500 in the city alone. The event also captured the attention of people around the world, as more than a billion used social media to encourage Batkid; President Obama even used Vine to deliver a special message to Miles.

Directed by Emmy winner Dana Nachman, Batkid Begins includes exclusive interviews with Miles and his family, as well as the team behind the event that grew far beyond their modest expectations.The Slamdance Film Festival will be held Jan. 23-29 in Park City, Utah.