When Reverend Alden falls ill while collecting donations for a struggling town, he is taken in by an ex-convict named Caleb Hodgekiss and his loving wife. Caleb consent to help by visiting Walnut Grove.
Nellie mistreats Laura's horse Bunny, prompting Laura to secret action.
Now that her beloved horse Bunny has officially been returned to her, Laura eagerly prepares to enter a local race. Angry and jealous about this, Nellie throws a tantrum until Harriet agrees to buy her an expensive thoroughbred from Sleepy Eye.
Carrie tags along for a school assignment, but Mary and Laura fail to keep a close eye on her. Their little sister wanders off and falls into an underground mine shaft.
In the wake of his mother's death, a devastated Charles travels to Wisconsin with the intention of taking his grieving father back to Walnut Grove. Meanwhile, with Thanksgiving approaching, Mary and Laura aren't quite sure how to tell Carrie the truth about the turkey which she picked out for Charles to buy.moreless
The folks of Walnut Grove have no idea what they're in for when the three Galender brothers settle in. While the oldest two run up large bills at the mercantile and the mill, the youngest boy causes big problems at school.
Laura convinces her father into letting her accompany him on a hunting trip, but an accident happens.
On Christmas Eve, Miss Beadle lets the schoolchildren go home early. This proves to be disastrous as a blizzard has already begun.
When Doc Baker is assisting with an outbreak of mountain fever in a nearby town, Mr. Edwards helps and inadvertently passes the disease to his daughter Alicia.
Laura befriends a timid classmate named Anna, whose excessive stuttering negatively impacts her ability to make friends. Laura stands by the girl's side when she is excluded from Nellie's elite new club, but matters are complicated when Laura is caught stealing Nellie's music box. Nellie agrees not to tell anyone, but she has some ulterior motives of her own that may threaten Laura's friendship with Anna. Terrified of the disappointment her parents will feel if they find out her secret, Laura goes along with Nellie's game--but when it hits a dangerous level, Laura must use her own moral judgment to resolve the problems caused.moreless