Caroline receives a letter from an old friend, living in a miner's camp where there's been an outbreak of influenza, who is summoning her for help.
Sam Terhune arrives in Walnut Grove looking for work, and finds favor with all of the townsfolk - except for his ex-wife, Hester Sue.
James and Cassandra's uncle, who wanted nothing to do with the children following their parents' deaths, arrives unexpectedly in Walnut Grove and takes an interest in them. But it turns out he's interested in custody of them as well.moreless
Mary, Adam, Hester Sue, and the Wilders all make a special visit to Charles and Caroline's for Christmas Eve. An unrelenting blizzard prevents everyone from heading home after dinner, but they all pass time by recalling Christmases of personal significance in their lives.moreless
When Laura announces her pregnancy, Caroline believes that she herself is also expecting--until Doc Baker confirms it is menopause.
Laura resigns from her teaching position when she is forced to integrate French and art appreciation into the curriculum. Mrs. Oleson takes over the position.
Newlyweds Laura and Almanzo have been bickering more than usual lately, and it escalates when Laura suspects Manly of unfaithfulness.
A former football star settles back into his childhood town of Walnut Grove with his wife and son. His zealous coaching is in conflict with Laura's schooling, and his interest in Albert's talent alienates his own son.moreless
Mary begins to see a bright light every time she stands in front of a window, fueling hope that she may recover her sight.
Exasperated by Albert's and Andy's attitudes toward school and personal care, Charles and Jonathan present them with a wager that hinges on their return to Sleepy Eye and back - all by themselves.moreless
A gang of university students plan a hoax tidal wave in order to steal priceless jewelry.