Seeing vultures circling a cabin, Johnny Yuma rides to investigate and discovers a family stricken with illness. Johnny rides to the nearest town to fetch the doctor, but the townspeople, led by the hardware store owner insist he leave town immediately because they fear Yuma has contracted diphtheria from the squatters. When Johnny rides back to help the family, the townspeople try to burn down the cabin with Yuma and the sick folk still inside. (thetvdb.com)