In this memorable cartoon, the none-too-cheery stories behind well-known nursery rhymes are revealed. Each segment begins with an upbeat performance of the song, follows with a depiction of the historical inspiration, and concludes with a somehow less jolly rendition of the tune. It covers "Little Jack Horner", "Mary, Mary, Quite Contrary", "London Bridge is Falling Down" with a clever contrast of amusing animation and serious narration.