
Eloise Larkin and her fiancé Arthur's plans to attend the rehearsal of a play are jeopardized because no one will babysit her obnoxious kid brother Donald. Eloise phones the Cosman Employment Agency, where Mr. Dinkle and Jack are seeking work. Jack flirts with Cosman employee Polly, but he is thwarted by the arrival of her boyfriend, a towering police officer. Polly sends Dinkle and Jack to babysit, but an attempt to lull the boy to sleep by reading the fairy tale "Jack and the Beanstalk" aloud fails when Jack stumbles over the larger words. Bemused by Jack, Donald reads the story instead, a role-reversal made complete when Jack falls asleep as Donald reads. In his slumber, Jack dreams that he is the young Jack of the fairy tale...