In the wake of her mother's death, Cheryl Strayed's family scattered and her marriage was destroyed. Four years later, twenty-six years old with nothing to lose, Cheryl made the decision to hike the Pacific Crest Trail from the Mojave Desert to Washington State - alone. She had no experience as a long-distance hiker and the trail was little more than an idea. But it was a promise of piecing back together a life that had come undone.

After years of reckless behavior, a heroin addiction and the destruction of her marriage, Cheryl Strayed makes a rash decision. Haunted by memories of her mother Bobbi and with absolutely no experience, she sets out to hike more than a thousand miles on the Pacific Crest Trail all on her own.