When Laura announces her pregnancy, Caroline believes that she herself is also expecting--until Doc Baker confirms it is menopause.
When Percival's parents Benjamin and Edna arrive for a visit, Harriet and Benjamin clash miserably over their grandchild's religious upbringing.
Newlyweds Laura and Almanzo have been bickering more than usual lately, and it escalates when Laura suspects Manly of unfaithfulness.
16-year-old Annie Crane is a rising artist in Walnut Grove, where she lives with her adoptive parents. When her talent lands her an exhibition in the city, the advertisement draws the attention of her biological mother.moreless
Fed up with his overbearing wife and his lack of authority over the children, Nels packs up and heads out for an indefinite period of time. While running a mobile mercantile of his own, he stays at a boarding house owned by Molly Reardon, a beautiful Irish woman who shows him the respect and appreciation that he's never had at home.moreless
Almanzo and Eliza Jane get a visit from their kid brother Perley Day, but after a few days with him, they quickly remember why the boy has been so estranged from the family over the years.moreless
When Mary's pregnancy is announced, Caroline's parents arrange a visit to witness the birth of their great-grandchild. Unfortunately, when her mother dies en route, Caroline is left to deal with her father Frederick, whose world now feels empty and meaningless.moreless
Nels Oleson is humiliated when he sees his estranged sister Annabelle as "the fat lady" in a traveling circus that comes to Walnut Grove. Meanwhile, Laura is unhappy when Almanzo begins dating a rude young woman named Christy.moreless
Determined to make it through the winter season, a pair of men earn money by selling tainted meat to the Walnut Grove community. Several townspeople later become infected with anthrax, including Laura, Albert, Adam, Alice, and Nels. The victims are confined to the blind school, and with time running out to help them, Charles and Jonathan go out to retrieve some medicine.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.
When an eccentric old woman loses her home, Laura and Albert intervene.
Adam's father arrives in town upon hearing from Mary that she and Adam are expecting their first child. The prospect of a new grandchild adds hope that Adam's strained relationship with his father might be restored.moreless
While coming home from a business trip, Charles and Jonathan run into former Winoka buddy Toby Noe, whom Charles invites to return with them to Walnut Grove.
Lonely after his grown son moves back east to start a life of his own, a widowed old craftsman named Isaac Singerman hires Albert Ingalls as his apprentice. As the two work together and become close friends, Albert feels the effects of antisemitism.moreless
When Charles learns that he's inherited the estate of a wealthy uncle, the Ingalls family find themselves on the brink of a new way of life.
An American Indian arrives in Walnut Grove with his tribe, seeking medical attention for his ailing father. Doc Baker provides his best treatment for the Chief, but when certain community members to refuse to let them stay in town temporarily, Charles proposes a secret plan with Doc Baker to keep the tribe safe.moreless
Laura is devastated to find her beloved dog dead in the barn. Charles brings home a stray named Bandit to curb his daughter's pain, but Laura refuses to bond with the new dog. Meanwhile, the Walnut Grove townspeople have mixed reactions to the idea of welcoming an eccentric new woman into their community.moreless
When Doc Baker is assisting with an outbreak of mountain fever in a nearby town, Mr. Edwards helps and inadvertently passes the disease to his daughter Alicia.