For the world’s top adventure athletes, the line between triumph and tragedy is razor thin. In the pivotal moments when life hangs in the balance, what drives the greatest to continue pushing to redefine what is humanly possible? From Academy Award®-Winning executive producers E. Chai Vasarhelyi and Jimmy Chin, EDGE OF THE UNKNOWN is an epic 10-part series that takes audiences inside the minds of pioneering adventure athletes as they recount the most consequential moments of their lives on their journey to perfect the mastery of their craft.