First Descent features some of the most jaw-dropping snowboard footage ever filmed and explores the rapid evolution of snowboarding from an underground American movement to a full-fledged global phenomenon. The rebellious, inspiring and sometimes controversial rise of snowboarding is seen through the eyes of those who set the standards and broke the boundaries. First Descent follows five of the sport's top riders on an expedition to Alaska as they ride some of the most challenging and dangerous mountains on the planet.