Reverend Alden eventually finds someone to take in the kids. However, this family just wants them to work. When Cassandra and James run away, their adoptive father doesn't even go to look for them. When Charles finds the kids, he tells them that he will adopt them if they could stand the house being more crowded. They happily agree to stay with the Ingalls.
Charles and Albert travel with the Cooper family while on a delivery. A serious accident occurs while the Coopers are going down a steep hill. The Cooper parents are killed. Charles tries to find Cassandra and James a new home. When he can't find anyone to take them both in, he feels he has to send them to an orphanage. After thinking about this idea some more, Charles decides to take care of the kids himself for a short period.
Adam and Mary move back to Walnut Grove so that Adam can start a law practice there. Adam's first case involves a person who has been swindling people in Walnut Grove. Adam believes the person is innocent until he finds out the truth. Adam convinces the jury to have pity on this man who was just trying to help out his family before he dies.
Joe Hagen moves to Sleepy Eye to help at the blind school. He begins to fall in love with Hester Sue. However, she is planning to marry someone that has a more promising future. One day Hester Sue hears Joe comforting one of the blind students. Hearing this makes her decide not to marry the other person.
Percival's parents decide to pay a visit. Mrs. Oleson and Mr. Percival don't hit it off so well. Mrs. Oleson is strongly against Mr. Percival's idea of raising Nellie's child as a Jew. An agreement is finally reached between the two. A girl would be Christian and a boy would be Jewish. Nellie ends up having twins, a boy and a girl.
Almanzo and Mr. Ingalls expand their business by delivery goods to Sleepy Eye. Both of them believe they know the quickest way to get there. They even place a bet...Whoever got to Sleepy Eye first before 1 o'clock had to cook the other family dinner. Both of them experience problems almost right from the start. Both of them end up making it there after the designated time. The husbands are forced to cook their wives dinner, but that doesn't go so well either.
Albert begins writing more frequently to a pen pal of his. He tries to impress the girl he is writing to. The girl also does the same thing. Albert falls in love with her and goes to see her one time. This girl is very reluctant. Albert thinks that she doesn't like him until he sees her in a wheelchair. Both of them promise to continue writing to each other, but this time they would only tell the truth in their writings.
A blind person has a talent for painting. Her work is so good, it soon gets publicized. The person's biological mother comes and tries to make up for what happened in the past. Only after the blind person learns that her mother abandoned her so that she could have a better life did she agree to see her mother.
Eliza Jane falls in love with Harv, but is afraid to tell him how she feels. Eliza Jane is devastated when she finds out Harv has somebody else in his life. Since Eliza Jane doesn't want to see Almanzo and Laura break up, she decides to leave and tells Almanzo to chase after Laura to tell her that she could teach in Walnut Grove. Laura and Almanzo then get married at the blind school.
Almanzo purchases some land and hires Harv, a friend of his, to help him in the field. Almanzo soon learns that he was tricked into buying the land. He is unable to get any justice. This causes Almanzo to call off the wedding until he gets back on his feet. Laura gets a teaching position, but Almanzo doesn't want her to work. Laura decides to take the position anyway.