EXCLUSIVE: The Make-A-Wish story that took the world by storm and turned San Francisco into Gotham City for a day premieres this month in Park City. Pint-sized Batkid (aka leukemia patient Miles Scott) has even pulled iconic poster artist Drew Struzan out of retirement as the feature documentary Batkid Begins: The Wish Heard Around The World prepares for its world premiere at the Slamdance Film Festival.

Batkid BeginsThe crowdfunded Batkid Begins chronicles how then-5-year-old Scott got to live out his superhero dream on November 15, 2013 with the help of the city, President Obama, and thousands of supporters by playing sidekick to the Caped Crusader in a series of staged missions as onlookers cheered him on. The event culminated with Scott receiving the key to the city from Mayor Ed Lee and sparked media attention and more than 400K tweets in 117 countries, reaching over 1.84 billion social media users.

Struzan’s artwork for film in the 1970s and ’80s is the stuff of movie geek legend, and his breathtaking painted designs for the Star Wars and Indiana Jones films in particular sealed his place in the hearts of generations of fanboys and girls. Despite officially retiring from the poster game in 2008, Struzan is rumored to be coming back for the new Star Wars films. But first he created this original poster for director Dana Nachman’s Batkid Begins, pro-bono:

Batkid Begins Drew Struzan

During Comic-Con, Deadline exclusively revealed a first look at the Batkid Begins trailer. Above we’ve got another exclusive behind the scenes clip from the pic, which premieres Saturday, January 24 at the Slamdance Film Festival.