The Reads' family car starts making funny noises, but they cannot figure out what is wrong with their car. To make matters worse, they cannot afford to repair or replace it. Fortunately, with the help of Buster and the Car Talk guys, Arthur figures out that Kate's rattle is stuck in the exhaust pipe. Jenna is invited to Muffy's annual slumber party, but worried that she will be teased since she still wets the bed and has to wear a pull-up. Jenna tries to hide her secret, but when her pull-up is exposed, Francine tells her that it is nothing to be embarrassed about as she used to have the same problem as Jenna.