Watch A Field Guide to Losing Your Friends (1970) : Full Movie Online Free Lost in a sea of incomprehension, for Tyler the only way out lay in doing something substantial. He decided to visit all 59 national parks in the U.S. in order to overcome his own grief and find new meaning going forward. While the path constantly challenged him with reminders of his loss, through these experiences Tyler finds a way to reinstate hope in humanity and in himself.