The 100 Mile Wilderness, located in the immense forest of northern Maine, is the most remote section of the Appalachian Trail. With a German shepherd dog named Matika for company and a heavy backpack tugging at his shoulders, McLaughlin accepts the challenge, reveling in all the hardship that the North Woods has to offer. He reflects upon the evolution of the trail system, as well as the history of the region, while traversing mountain ranges, fording rivers and slogging through bogs. He contemplates his own inclination towards wildness while pressing southward, encountering scores of hardy AT thru-hikers on their final push to Mount Katahdin. The trail twists and turns. The journey holds many surprises. And the beautiful mystery of the natural world prevails.