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.
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.
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.
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.
Troubled by his parents' quarreling, a young boy finds solace in performing stunts.
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.
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.
Living in Winoka has become nearly intolerable for the Ingalls family, but Charles is reticent to leave because of poor prospects back in Walnut Grove.
Laura befriends a classmate who is ashamed of her obese father.
Albert challenges a local football team to a game, and everyone gets in the spirit of the heated competition.
Life in Winoka grows increasingly difficult for the Ingalls family as they try to adjust to city life. Meanwhile, Caroline and Alice open a new school in a barn for their children.
Poor economic conditions have forced many of Walnut Grove's residents to move elsewhere. Charles and Caroline settle their family in the bustling town of Winoka, where they manage a hotel that's located near Mary and Adam's blind school.