A college-educated farmer named Joe Coulter moves to Walnut Grove with his wife, who is expecting a child. Joe tells the Walnut Grove-area farmers of a new hybrid of corn that would produce good crops, to which the farmers are very enthused, and he even agrees to collect everyone's money and take the trip out to Minneapolis to purchase the corn for everyone. After a fateful accident on the way home, Joe is unable to return on time, and while several of the men in town turn against both Joe and his emotionally strained wife, each member of the Ingalls family does their part to defend the Coulters' honor in the face of such confusion.moreless
After having a huge argument with his wife in the mercantile, Nels leaves the house and moves into a hotel room down the street. To the surprise of everyone in the town, the problem worsens, and the town wonders if this is the end for the Olesons.
Laura connects with a sweet, shy classmate named Olga Nordstrom, who was born with a short leg. Both Laura and Charles try to help the girl, but meet opposition with Nellie - and Olga's father.