The 1956 line of Chrysler, Plymouth and Desoto automobiles is promoted during commercials and sketches. Jack Benny delivers a monologue, with interruptions from Frankie Laine and Joe Besser; in an in-joke about Laine, Besser cracks a whip and sings Mule Train. To keep the sponsor happy, Benny sells his Maxwell to a Japanese gardener and buys a new 1956 Plymouth. Jack's jokes are interrupted by a singing Gary Crosby, who tells him that his father Bing bought the airtime. Benny is upstaged while signing an autograph for a little girl, who takes his violin and plays beautifully. Songs by Marilyn Maxwell, Frankie Laine and The Sportsmen Quartet. Chrysler tells Jack they want him to keep the Maxwell to contrast their cars, so he goes searching to buy it back, only to learn that Gracie Allen has bought it to use as a garden planter.
