Half & Half

For once in her life Mona thinks she has won out over her spoiled half-sister Dee Dee when Dee Dee moves into the same building and Mona finagles a move into the penthouse apartment, but she quickly discovers her new living accommodations are not what she expected. Later, things appear to go from bad to worse when a guy Mona is pining for falls for Dee Dee. But Dee Dee surprises Mona and shows her that there can be some benefits to having a half-sister .

Mona neglects Spencer while she works on hooking up with Brian, the bug guy, and Dee Dee takes the opportunity to befriend Spencer in order to get closer to her sister. After Brian loves Mona and leaves her, Mona tries to get consoled by Spencer, but he's too busy hanging with Dee Dee which causes Mona to accuse Dee Dee of stealing her best friend .

Despite Mona's initial protests, Dee Dee throws a joint birthday party for the two of them. On the eve of the celebration, Mona discovers Phyllis' story of how Big Dee Dee stole her man, Charles, years ago is actually a lie, throwing Mona into a tailspin .

Mona encourages Dee Dee to become involved with a temperamental recording artist in order to keep him well behaved on a video shoot, but once the relationship starts to heat up, Mona's concerned she may be "pimping" her little sister out .

When Mona gets on Dee Dee's case about leading a privileged existence, Dee Dee decides to prove to her and herself that she can survive in the real world by landing a job at a waitress. Meanwhile Phyllis encourages Mona to go to a dating service to find a good man .

Dee Dee's desire to have everyone act as one big happy family backfires when Dee Dee insists on Mona coming to an award ceremony for Charles. However, this incident does prompt the family to deal with their dysfunction... to a small degree .