Dee Dee persuades Mona to attend a banquet that's being held in honor of their father, but the experience reminds Mona that she's the odd one out within her dad's ""new"" family.

Mona and Phyllis attend Thanksgiving dinner at Big Dee Dee's, where Mona's grandmother is the guest of honor. But Dee Dee becomes jealous when she learns the older woman showers Mona with affection. Meanwhile, Phyllis and Big Dee Dee make a deal; and Spencer blurts out one of Mona's secrets to her mother.

When Mona mistakes a dinner date with a handsome reporter as a personal affair, she unwittingly gets quoted in a music magazine saying disparaging things about one of her music label's artists that ends up getting her fired. Meanwhile, Dee Dee utilizes her law school knowledge to try to get the story retracted.

Mona tells her friends and family that she doesn't want to celebrate her birthday, as she would rather spend the day alone in quiet reflection. However, she soon becomes extremely bored. She is relieved when Big Dee Dee shows up, although she has actually forgotten Mona's birthday and is just there to see Dee Dee. The two go down to the laundry room in pursuit of Big Dee Dee's dog, and wind up trapped when an earthquake hits. They share a picnic lunch and have a revealing talk about their relationship. Meanwhile, Phyllis tracks down Charles to try to convince him to help buy a car for Mona's birthday, and they wind up stuck in an elevator. The earthquake also traps Dee Dee, Adam and Spencer in an upscale store as they shop for Mona's gift. Everyone is embarrassed when Spencer has a panic attack after the earthquake.

Delicious Records is bought out; and a new boss, respected music business veteran Kai Owens, takes over the company. She is bringing many of her own associates along, so she begins conducting interviews to see which employees will get to keep their jobs. Adam, exhilarated by all of the drama, giddily celebrates each new firing by banging a gong. Mona fears that she will be the next to go because she is terrible in interviews. Despite Dee Dee's advice, she blows the interview. However, Kai respects her work so much that she promotes her to a Vice President position. This makes her Spencer's boss, and he has trouble adjusting to the situation, ignoring her orders and talking back to her. Mona worries that they will not be able to maintain their friendship. Meanwhile, Dee Dee pleads with her mother to let her make a connection with her unborn brother in some way. Big Dee Dee offers to let her name the baby.

Big Dee Dee, Phyllis, Mona and Dee Dee make plans to spend Mother's Day together at a brunch/concert. Mona is surprised to learn that Dee Dee plans to get Phyllis a present. She scrambles to find something appropriate for Big Dee Dee. Big Dee Dee grows tired of receiving gifts meant for the baby and is thrilled with Mona's gift of Louis Vuitton luggage. This upsets both Dee Dee and Phyllis, who had already bristled at the fact that Mona was spending more time with Big Dee Dee. Phyllis starts complaining about her gift (even though it is the watch she repeatedly requested). Dee Dee suddenly gives Phyllis a diamond bracelet in an attempt at one-upmanship. At the brunch, Phyllis and Big Dee Dee discover that their gifts may not have been as thoughtful as it seemed. Everyone is at each other's throats, until the bathroom attendant, separated from her family for the day, forces the mothers to see the error of their ways. Meanwhile, Charles and Spencer watch Drew while the women are

Mona pretends that Drew is her son in the hopes of winning over an artist that she is trying to sign who is a single mother. After her plan fails miserably, she suggests that Delicious stop chasing after artists that they have no chance of signing and instead conduct a talent search. Spencer continually bad-mouths all of Mona's ideas, and the two snipe at each other. Adam advises Spencer to finally deal with the tension between Mona and him before it destroys their friendship. Meanwhile, Dee Dee obsesses over trying to build a cabinet without any assistance; and Big Dee Dee drives Charles crazy when she tries to get over her depression by scheduling lots of ""quality time"" for them as a couple.

Mona becomes upset when Kai repeatedly refuses to give her credit for the Fast Track contest in interviews. Mona, at her family's urging, tries to seize some of the credit for herself, with disastrous results. Meanwhile, Big Dee Dee gets in touch with her agent so that she can resume her acting career. She winds up playing second fiddle to Coco in a dog food commercial.

Mona goes against her initial instincts and decides to attend her ten-year high school reunion, where her professional accomplishments cannot protect her from the cruel comments of a pair of former cheerleaders. She perks up after a successful classmate takes an interest in her. Meanwhile, things do not go as planned for Spencer when he meets his on-line sweetheart in person; and Adam tries to get rich by stealing company supplies and selling them on the Internet.

After throwing together a baby shower for Neil and Janet, Dee Dee becomes concerned by the fact that she is the only person in attendance who is not attached. She begins to question her life and decision to pursue her career so aggressively. Meanwhile, Mona worries that her lack of maternal instinct could have a negative effect on her relationship with Chase. She tries spending time with Drew, and receives some advice from Big Dee Dee.