The Cooper children go home with Charles, but as they're adjusting, a set of adoptive parents arrive.
While making an out-of-town delivery, Albert and Charles meet and travel with the Cooper family. An accident occurs en route with the parents, leaving Charles in charge of their two children.
When Laura announces her pregnancy, Caroline believes that she herself is also expecting--until Doc Baker confirms it is menopause.
Adam is officially a lawyer, but his client prospects are slim.
Albert's girlfriend's pregnancy brings chaos into both their lives.
Albert's budding romance with a young girl is complicated when it is discovered that she is expecting.
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.
Almanzo gets suckered into watching his brother Royal's two bratty boys.
When Percival's parents Benjamin and Edna arrive for a visit, Harriet and Benjamin clash miserably over their grandchild's religious upbringing.
A female activist arrives in Walnut Grove to encourage the men to share equal property rights with their wives. After getting into a huge fight about it with her husband, Harriet Oleson goes to live at the hotel. Caroline decides to follow Harriet's lead.
With his vision restored, Adam is eager to fulfill his dream of becoming an attorney. Meanwhile, Mary is divided in her enthusiasm about his prospects.
An accident restores Adam's eyesight.
Charles and Almanzo expand their business by delivering goods to Sleepy Eye. After arguing about the quickest way to get there, they decide to make it a race.
Albert tries to impress a penpal he figures he'll never see.
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.
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.
Almanzo's dreams of building a home do not go as planned, forcing him to postpone the wedding. Laura has a way for them to earn some money, but his rejection of her idea starts a feud between them.
Upon being sold a piece of land, Almanzo is eager to begin building a home for him Laura. He hires his friend Harv Miller to assist him with his crop. Meanwhile, Laura is offered a teaching job at a faraway school.