In August 2010, Noah Pippin, a 31-year-old ex-marine leaves his parents’ home in Lake Ann, Michigan headed west to report for drills with the California National Guard. But Pippin never shows up. Investigators pick up a trail that leads them far from California and into the heart of some of the harshest wilderness in the U.S. As time passes and the clues in Pippin’s case grow more ominous, his parents can only wonder what’s driving their son deeper into the unknown