Nobody can foretell how a riddle charm is a-going to unravel"" but everyone will know how this fiddle-faddle is a-going to end. Rosy Morn Ray, determined to enter the Mountain Folk Festival, gets no encouragement from a family preoccupied with The Baby--he's ""puny and bluish."" Granny Fite, local midwife, agrees to make a charm which Rosy hopes will improve the baby's health and assure her trip to the festival. The sidekicks (brothers Truman, Roosevelt and Ike, friend Hosie) are Yes-sirree-Bob mountainfolk, convinced that Granny's mysterious Luce is Lucifer himself when in fact he's Luce Devine, folk song collector from the university and panacea for health and welfare problems. Rosy, fresh from a triumph at a revival meeting, is guaranteed a trip to the festival and she even gives The Baby a name--President. Grand Old Opry-tune-ity.