A gripping documentary about Bobby McMullen, a competitive mountain biker on a mission to race the most demanding downhill course in the country, riddled with obstacles and flanked by steep, life-threatening cliffs. If you think that sounds challenging, here's something that will really amaze you: Bobby is blind. With the help of a guide and a rigorous training schedule, Bobby is determined to race his bike down this course. Through thrills, spills and jaw dropping helmet camera footage, we see how Bobby uses humor, determination, and unshakeable optimism to battle adversity - both on and off the bike.