 During a trip to a teaching awards ceremony in Minneapolis, the stagecoach that Adam, Mary and a pregnant woman named Marge are riding in is involved in a rollover accident. Mary is the only one who is able to free herself and is left to rely on her own wits to find help. Meanwhile, Laura and Albert give Nellie and Mrs. Olesen quite a buzz when the Ingalls  youths offer a hive of bees to their honey- and money-hungry rivals ... not telling them they are really hornets!