Because of his success surviving alone in the wilderness for fifty-four days, fifteen-year-old Brian, profoundly changed by his time in the wild, is asked to undergo a similar experience to help scientists learn more about the psychology of survival.

After having survived alone in the wilderness, Brian finds that he can no longer live in the city but must return to the place where he really belongs.

After a plane crash, thirteen-year-old Brian spends fifty-four days in the wilderness, learning to survive initially with only the aid of a hatchet given him by his mother, and learning also to survive his parents' divorce.