Greg discovers he should pay more attention to his wife's intuition when Dharma has a nightmare and begs him not to go away on a business trip.
The sisters are about to go on a relaxing weekend getaway to Cabo, when a mortally wounded Leo shows up and asks for their help to save a young woman who's being chased by a darklighter. Desperate to save Leo, Piper casts a spell that swaps their powers, however in doing so, she accidentally swaps the powers of Prue and Phoebe as well. Meanwhile, pressed by an Internal Affairs investigation Andy decides to leave his job in order to protect Prue's secret from being exposed.
Norm, embarrassed about being the new "Agony of Defeat" on ABC's Wide World of Sports, asks to be reinstated into hockey so he can play in a charity game and regain his somewhat good name. They choose against it so he takes on a high profile case in hopes that they'll change their minds.
Peggy and Hank's 20th-anniversary party leaves the missus missing their youth; and a bottle of tequila is the highlight of their private revelry.
Tool Time continues to be a "jewel" despite the continued excess presence of the Binford name. Things rapidly turn sad when Al decides to take his mother out to dinner to tell her he's going to get married... and she has a heart attack and dies.
Mike Shannon brings in a young boy who makes a confession to Sorenson. Sipowicz worries about his up-coming court appearance facing Sinclair. ADA Costas takes care of him. Dolores father attends the court hearing.
Moesha turns 18 and the gang decides to throw her a surprise birthday party but Kim spoils it by telling her. But the real surprise for Moesha is when all her former boyfriends, Ohagi, Q, Jeremy and Aaron, all stop by to show how they all want her back. But Moesha doesn't want to start over with any of them- except for her former teacher, Channing. After realizing that a relationship between them wouldn't work, Moesha and Channing both decide to just remain friends.
After yet another relationship goes sour, Nina realizes that her lack of romantic success is probably due to her tendency to make bad choices in men. Her resolve to start making good choices is tested almost immediately when her old boyfriend Roy breaks out of prison and she falls in love with and begins dating not only Roy, but also the cop who is pursuing him. Meanwhile, Jack, Finch, and Elliott engage in a series of wagers on how predictable each other's behavior is.
Felicity suspects one of Meghan's "spells" when finals stress is exacerbated by a series of sudden relationship mishaps, including Noel reconsidering a drive to California with her.
Neighbors treat Thurgood like the plague after Haiti Lady puts a curse on him following their row in the new community rooftop vegetable garden.
The cases of Harmon Rabb, former Navy fighter pilot, and his fellow lawyers of the U.S. Navy's Judge Advocate General's office.
In an effort to distract Buffy from the Ascension, the mayor instructs Faith to poison Angel.
During a Beastie Boys concert, Bender runs into a high school buddy, Fender. He invites him to a party, which turns out to be robots getting high off of electricity, or "jacking on". After one try, Bender is hooked.
Mike is tested when Nikki is out sick and the mayor hires his ex, Heidi Klum, to help publicize the new animal rights campaign. Meanwhile, the mayor and Paul try to inject some humor into their press conferences. When Mike accidentally tells Nikki that even though Heidi came onto him, he had feelings for her and still turned her down, she walks out.
Ally is having weird dreams about moments from her childhood, some good, some painful. But each compels her to wrestle with the question of true love. Can it be real or must it inevitably be just an illusion? Ally's latest case is calling the issue into question as she and John Cage are representing a woman charged in Criminal Court with fraud. Barry Philbrick has testified that his wife, Kelly Philbrick married him solely for his money. He claims that at the time of their marriage, she wasn't in love with him, that her wedding vow was a lie and that she admitted it in a letter to a close friend that Barry found. Kelly readily admits to her lack of feelings for Barry: she loved him but she was never in love with him. On the stand Kelly admitted that she had been writing to an imaginary friend: the man of her dreams, who then became the standard by which every real man in her life had to measure up too.
A frantic weekend begins for Alex when she begins tracking down the builder of several elaborate sand castles that appear every day at the beach, while she gets stuck entertaining her life-long childhood friend Sam's fiance, Diana, who falls for Mitch, which prompts Mitch to asks Alex to pose as his girlfriend to keep Diana away.
A present-day woman believes she's the reincarnation of Xena, the warrior princess, while her disbelieving boyfriend thinks she's crazy, and seeks help from a past life expert, with some familiar faces along the way.
Lexi fears that the police will accuse her of killing Tony and forging his signature on the contracts. Michael helps her dodge suspicion by returning the body to Tony's mansion. Michael asks Lexi to marry him. Lexi befriends Eve in the hopes of gathering dirt on Amanda. Eve experiences flashbacks about high school, and recalls that Amanda and Kent were lovers. Dr. Visconti puts her under hypnosis to trigger her memories. Lexi takes Eve to the murder site, where she realizes that Kent did not die from his fall; Amanda beat him to death and tricked her into accepting blame. Megan catches a naked Terry kissing Ryan. She wants to call off the engagement, but Terry apologizes and admits that she caught Ryan by surprise. Terry pretends to leave town, and Ryan and Megan get married. Terry kidnaps Sarah and crashes her car into a utility pole. Jane discovers that she is pregnant, but doesn't tell Kyle.
When Robert and Amy have sex in Robert's apartment, they forgot to close the curtains. It doesn't take long for the other tenants to launch a partition to make curtains mandatory. Humiliated, the loving couple are desperate to find a new make-out spot. Debra wants Ray to help them, so he offers Robert and Amy the Barone household basement.
Becker fears that Reggie may get the wrong idea if he asks her to be his date at a medical fundraiser. Fearing that Reggie will misread his invitation, Becker struggles to find someone else to take to the event. Despite his resistance, his friends insist that he should just ask Reggie. The ongoing pressure causes Becker to recall the first time he was rejected by the opposite sex, as Prequel Monday concludes with a flashback sequence of a 10-year-old Becker asking a little girl to a school dance.