When Buddy receives word that his shy sister Bunny (Mindy Cohn) is arriving for a visit, he pleads with Charles to help entertain her. On arrival, however, she confesses to Buddy that she's in trouble and then disappears for several hours, reappearing as an outgoing "˜party girl." Charles finds Bunny drinking, thus revealing his suspicions to a skeptical Buddy that his sister is an alcoholic. It's only when Bunny "totals" Buddy's car, and nearly seriously injures the children that she finally admits her illness and agrees to seek help.