The Ingallses and Olesons take a trip to the fair. Patrick, a carnival worker and Mary's boyfriend, and his boss, Cass (a balloonist and suave ladies man) vie for Mary's attention; Charles and Nels entering a jackass riding contest; and Carrie has her own adventure.
Elenco: Melissa Gilbert , Michael Landon , Lindsay Greenbush , Sidney Greenbush , Melissa Sue Anderson , Richard Bull , Jonathan Gilbert , Kevin Hagen , Matthew Laborteaux , Dean Butler , Dabbs Greer , Karen Grassle , Katherine MacGregor , Ruth Foster .