In the final episode of the series, what starts out as a celebration of friendship quickly ends in a web of betrayal and deceit; the girls find themselves in the slammer with Sergeant Duffy; and the investigation into ? ? death begins…

While Tina and Helena attend a documentary screening, Bette leaves for Washington D.C. to speak at a Senate hearing and meets with Senator Barbara Grisham. Attempting to provide for both herself and Moira, Jenny puts her dreams of becoming a writer on hold and starts waitressing at The Planet. Jenny and Moira are also invited to a party hosted by Billie Blaikie where Moira meets like-minded people. Meanwhile, Carmen has to decide whether to give up Shane's opening party in exchange for a once-in-a-lifetime opportunity to DJ at an exclusive VIP party, and Dana plays at a tennis tournament and declares her love for Lara in front of TV cameras.

Shane and Jenny are still melting over each other; Bette and Tina go to Nevada to meet a potential birth mother; Max is trying to deal with being pregnant; Alice and Tasha play matchmaker; and Kelly Wentworth may have what Bette needs.

Dana is invited to a dinner party for Subaru, who want to sponsor her tennis career, but Lara is hurt when Dana takes her male doubles partner instead of her. Meanwhile, Tim is shocked when he catches Marina and Jenny in a compromising position, Alice tries to sort out the problems with her mother, and Bette tells her father about Tina's pregnancy, but is upset by his reaction.

Bette travels to New York on a business trip. Tina is shocked and angry about her lawyer's true intentions. Jenny and Shane search for a new roommate, and Kit bonds with an inspirational speaker.

Shane opens her own styling business, and Bette loses her position as the sole provider for the family, forcing Tina to take up a job under Helena. Now back in L.A., Jenny introduces Moira to her surprised friends. Dana and Lara make plans to visit France while Alice still obsesses over Dana. Meanwhile, Kit is surprised by The Planet's new manager who wants to make some drastic changes to the place.

As the "Provocations" opening approaches, Bette struggles with a temptation. After some sad news, Dana turns to Tonya, leaving Alice unhappy. Shane tries to let Clea down gently but it backfires in her face.

Acting on Alice's advice, Tina decides to hire a famous lawyer. Dana and Alice struggle to stay away from each other, Ivan gives Kit the cold shoulder, and Jenny decides to have a serious discussion with Robin regarding their relationship.

Alice pushes Dana to break up with Tonya, but Dana isn't prepared for when Tonya reveals her own secret. Tina considers her new attraction to Helena, Kit finally hooks up with Benjamin, and Jenny and Carmen continue to enjoy each other's company.

Shane tries to dull her pain in the hopes that she can forget about Carmen and Jenny's blossoming relationship. Tina comes between Helena and her ex over the custody of their kids and offers a glimmer of hope to Bette. Dana and Alice call everyone to The Planet to announce their new relationship.

When Alice runs into her ex, she is surprised to find out that she is now dating Dana's ex-girlfriend. Bette and Tina reach an agreement over their relationship, Jenny is worried that she may have lost a writing job, and Shane finds some comfort in a church.

Tina takes a business trip to Canada and has a chance to explore her feelings for the opposite sex. Dana's treatment puts a strain on her and Lara's relationship. Meanwhile, Jenny helps Moira in her transformation to Max, Carmen and Shane dedicate parts of their bodies to each other, Alice reverts back in her obsession over Dana, and Kit takes control. In a special appearance the B-52's perform at The Planet.

Shane tries to deal with her betrayal to Jenny as they both attempt to figure out their feelings for one another. Shane awkwardly tries to apologize to Jenny, who responds by threatening to evict Shane from her house. Meanwhile, Bette and Tina get worried when Angelica comes down with a fever which gradually gets worse. Alice and Tasha cannot decide whether to break up or stay together since their different views on life strain their romance to the breaking point. Elsewhere, Helena and Kit celebrate after taking over SheBar nightclub and formally rename the place, 'HIT!'

Jenny throws a baby shower for Max; Bette and Tina hit a roadblock in the adoption process; Bette goes solo to her gallery’s opening night celebration leading Kelly to go in for the kill; Shane is feeling boxed in by Jenny; and Alice starts to feel like three is a crowd.

Tina tries to get over her concerns about the new sperm donor. Tim decides to throw a dinner party and invites Marina, making Jenny feel uncomfortable. Alice runs into her abusive ex-girlfriend. Dana has her eye on a chef, but is hesitant to make a move on her.

After arriving home, Tim starts to worry when he learns that Jenny has vanished. Bette travels to New York for an art opening and her relationship with Tina is put to the test. Back in Los Angeles, the sperm donor's girlfriend discovers a lonely Tina and starts to harass her.

Tina and Bette are stunned when their friends say their impending parenthood has made them boring. Jenny stays at Marina's when Tim throws her out but she is shocked to learn the truth about Marina's personal life. Dana rejects Lara as her sponsorship contract hangs on the line.

When Jenny's old roommate (guest star Sarah Strange) from college comes to stay, Jenny decides to use the opportunity to reveal the details about her affair with Marina. Bette and Tina join a group in preparation for becoming parents, and Dana faces a tough time when she must come out to her conservative parents.

Tina, Jenny, Shane, Alice and Dana all share an eventful trip to Palm Springs. While on the road, they all share their "first love" stories. Back in Los Angeles, Bette hires Candace, an attractive carpenter, to handle the set-up of the "Provocations" exhibit opening at the gallery.

As Bette desperately begs for Tina's forgiveness, Tina herself is hiding a shocking secret from Bette and all her friends. Alice and Dana continue to hide their romantic trysts from the others, and Jenny finds herself saying goodbye to Tim as he prepares to leave.

Dana is stunned when she learns a big secret about her brother, Howie, at Gay Pride 2005. Mark tries to make amends with Jenny and Shane, Kit and Bette learn that their father, Melvin, is refusing treatment for his illness, and a shocking memory about Jenny's childhood is revealed.

Bette reaches out to Tina as she decides to take her father home for his final days. Jenny struggles after recalling a difficult memory from her childhood, and Alice becomes jealous when Dana agrees to have dinner with her ex-girlfriend, Lara.

A surprise guest shows up at a sad event as Bette gets stunning news about her job. Tina goes into a surprisingly difficult labor, Jenny finally reaches breaking point over her painful childhood memory, Alice struggles with her jealousy, and Peggy Peabody lays down the laws with her daughter, Helena.

Jodi brings Bette to meet and hang out with her friends but Bette has a hard time letting go of control. Shane decides to give up on sex and instead pours her energy in exercising. Tasha faces new allegations. Meanwhile, Helena finally gets comfortable in prison but things are about to change when her mother turns up.

Bette and Tina talk about expanding their family and beginning a new life but the plan could be ruined when Bette bumps into an old friend with dangerous potential; Alice and Tasha ponder their compatibility as they seek counseling; an old flame appears, sending Helena reeling; and Max is faced with an extraordinary situation.