A town—where everyone seems to be named Johnson—stands in the way of the railroad. In order to grab their land, robber baron Hedley Lamarr sends his henchmen to make life in the town unbearable. After the sheriff is killed, the town demands a new sheriff from the Governor, so Hedley convinces him to send the town the first black sheriff in the west.

During a heated argument with her sister Joan, Gail discovers the shocking news that she is adopted. With the reluctant support of her adoptive parents and baby sister Penny, Gail goes in search of her biological mother and true identity.