The no-fall zone: It’s what makes highball bouldering the new cutting edge of climbing, where miniscule holds and overhanging routes can stretch more than 30 feet above the ground with no protection beyond a pile of crash pads below. But the thing about pushing bouldering to new heights — literally — is that the consequences also rise. Broken bones, concussions and trips to the hospital are among the more unfortunate results. And sometimes, the mental toughness required is even more strenuous than the actual climbing. This documentary from Sender Films follows the wild personalities who are pushing bouldering into high and mighty places it’s never been before.