This episode is good because of the realistic portrayals of its characters. They are human and act with compassion and concern. Cliff Robertson plays the leader of a small group of wagons, heading for California. They are nearly done in by the sweltering heat of the New Mexico desert. Robertson goes "over the rim" looking for water and game. He is suddenly transported a hundred years into the future. He meets some nice people who help him, but he is confused and bewildered. Still, he plays the stoic leader that he is and tries to piece things together. Unfortunately, the authorities get involved but he comes to realize the grander plan involved. This is a nice treatment of a story Serling used many times.