The Ingallses have to seek shelter when a blizzard hits. There they meet an Indian who helps them out. A marshall, looking for the Indian, comes by...

Laura and her horse, Bunny, are picked to win at the horse race in town. Since Mrs. Oleson doesn't want Laura to win, she buys a great thoroughbred for Nellie to ride.

The school children are allowed to put on plays in groups. Laura and Mary work with Ginny Clark, a student who has no father. Ginny wants her mother to date, but her mother, Della, doesn't believe she looks good enough. Ginny sells her long beautiful hair so she can buy her mother a new dress. Della at first accuses Ginny of stealing money until she sees that her daughter has cut her hair.

After going to Chicago for the first time, Charles and Mary are very disappointed in what life in the city is really like.

Each student must trace their family tree for a school assignment. Albert is unsure how he can do the assignment. The Ingalls decide to legally adopt Albert, but run into problems when Mr. Quinn, Albert's father shows up. He wants Albert until he sees him. Albert pretends to be blind with the hope that his father wouldn't want him. The blindness does the trick. Albert is legally adopted by the Ingalls.

A circus comes to Walnut Grove. Everybody is helping set up, except Nels Oleson. His long, lost sister is in the circus. Only Mrs. Oleson believes her husband's story about his sister. Nels is nominated to be the announcer at the circus. When he announces his sister, he says, ""My sister, Annabelle."" These words lead to Nels and Annabella becoming very close siblings.