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.
Former boxer Joe Kagan moves to Sleepy Eye to help with the maintenance of the blind school while Adam and Houston are out of town. Joe is still in love with Hester Sue, but she is being courted by another man.moreless
Almanzo gets suckered into watching his brother Royal's two bratty boys.
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
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
Two men make a profit by selling tainted meat to the Walnut Grove community. As sickness sweeps through Walnut Grove, 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
While out of town for the purchase of some new horses, Charles stays at the home of a wealthy but dysfunctional family.
Mary begins to see a bright light every time she stands in front of a window, fueling hope that she may recover her sight.
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
Troubled by his parents' quarreling, a young boy finds solace in performing stunts.
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
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.
On the evening of their anniversary, Charles is stuck in the middle of nowhere with a broken wagon wheel. While Caroline and the girls wait at home--with a special celebration dinner all prepared--Caroline passes the time by reminiscing with her daughters about her youthful beginnings with Charles.moreless
Charles and Jonathan leave Walnut Grove on a profitable business trip. Meanwhile, Laura develops a crush on a classmate.