Despite attempts by his friends, loved ones, and his new girlfriend to dissuade him from this dangerous feat, Alex Honnold, the world's most accomplished free soloist climber, prepares mentally and physically for his most daring adventure to date: scaling the 3200-foot El Capitan in Yosemite without a rope or safety gear. If he succeeds, it will mark the largest wall he, or anyone else, for that matter, has ascended without any kind of equipment.