In Episode 4 we meet  Dr. Mark McMahon.a dentist who after a life changing moment leaves his practice behind to travel to the end of the World. A six month sabbatical turns into two and half years.  With Mark as our guide he shows us what Goethe said in his couplet, "Whatever you can do or dream you can begin it. Boldness has genius, power and magic in it." and that the end of the world is the beginning of everything.