While examining the mysterious deaths of the entire crew on board the Starship Tsiolkovsky, the crew of the Enterprise is infected with a touch-transmitted virus that lowers inhibitions.
After tracking a gang of sports car thieves, Ponch and Jon earn commendations. Ponch also learns his probation period is over.
Ken and Kathy Kelly move into the neighborhood and adopt three boys from the orphanage. With all of the kids from different ethnic backgrounds, the Kellys face unexpected racism from their neighbors and look to the Bradys for support.
An itinerant medicine man and his daughter find only tragedy when they attempt to sell their wares in Dodge City.
Festus Haggen is charged with the job of finding a wife for Sweet Billy, one of his kinfolk.