Aaron Howell and Russell Davies are combat veterans who were injured in war and now come together for another mission as they guide blind Navy veteran, Lonnie Bedwell, on his third trip through the Grand Canyon. Over a 14 day river trip they battle more than 80 powerful rapids, screaming directions to Lonnie the whole way. Always looming downstream roars Lava Falls, the largest rapid of them all. Throughout the journey they remember their past experiences and learn that negotiating the rapids of life is as simple as forming a team, kicking out in the current, and finding a line through the chaos.