Mrs. Oleson (Katherine MacGregor) is determined that the Ingalls children will not get the better of her own kids during a school leaf-gathering competition. To that end, Mrs. Oleson packs up her family and her precious tea set and joins the Ingalls for a weekend camping trip. The presence of the Olesons sabotages any hopes that the Ingalls would enjoy themselves -- but the worst is still to come. This episode was filmed on location near Sonora, CA. ~ Hal Erickson, Rovi