Ann has a dinner party, and one of Donald's now-married ex-girlfriends will attend. Ann tries to impress Heather, but the plans are ruined when her juvenile weekend guest plugs in a heater to warm up her lemon tree.

Ann learns that killing two birds with one stone is almost too much when she goes to St. Louis with Donald to meet his parents and to star in a play. She is convinced that Don's mother hates her and decides that she might be able to turn it around if she were to have a larger, starring role in the play instead of her more modest part.