Charlie Engle spent much of his young adulthood chasing the next high. His addiction to drugs and alcohol nearly cost him his life. But he eventually attained sobriety, and along the way, developed a new passion: running. He started with marathons but moved to longer distances and adventure expeditions. In 2006, he led a team across the Sahara, a feat documented in the film, Running The Sahara. His fame drew the attention of government officials, including one determined tax agent at the IRS.