Robert enlists the help of a musical icon (guest starring Lyle Lovett as himself) to fend off Kitty's bout with cold feet. Nora reconnects with a man from her past (guest starring Chevy Chase as Stan Harris) and Sarah has mixed emotions about agreeing to have dinner with a new business consultant (guest starring Steven Weber as Graham Finch). Meanwhile, Tommy is overwhelmed by guilt when Sarah and Lizzie return home, and Justin pursues a new romance with someone with questionable intentions.