When Jordan Cannon, a young climber infatuated with climbing history, meets climbing legend Mark Hudon, a Yosemite big wall free-climbing pioneer, they form an unlikely partnership around a common goal. While Cannon wants to complete an all-free ascent Freerider on El Capitan in a day, Hudon hopes to free the route in as many days as it takes, becoming the oldest guy to free climb El Cap.