Joe and Helen watch with trepidation as one of Brian's old girlfriends, Shannon Moss, arrives for a visit. Their fears are soon realized when Brian falls under her spell yet again. The fact is that she is just using him to boost her own fragile ego. For her career is in trouble, and her boyfriend has just dumped her. But Brian thinks they're starting a real relationship this time. As always, Shannon pushes him aside once her life seems to fall back into place. Brian doesn't wake up to the truth until goaded by Joe and Helen into a final confrontation with Shannon in the airport.