Nellie falls off of Bunny and pretends to be paralyzed. Mrs. Oleson blames Laura for this and wants to destroy Bunny. Laura tries to hide the horse from Harriet. One day, when Laura goes to help Nellie out, she discovers that Nellie is just fine. She pushes Nellie in a wheelchair down a hill into a small pond. When Nellie walks out of the pond, Mrs. Oleson realizes what Nellie has been doing. Mr. Oleson then gives Bunny back to Laura to punish Nellie.