Piper and Phoebe devise a plan to recover Leo. Meanwhile, Paige rescues her new charge from a Darklighter; Billie is forced to make an important decision.
Gabrielle and Carlos are shocked when the father of their baby shows up to take the baby back. Cops and a lawyer arrive to a house on Wisteria Lane. Lynette tries to help Ed heat up his sex life. Meanwhile, Karl decides to break up with Edie, as Edie has no idea that Susan is the "other woman." Edie causes a fight to break out in a bar, after she trips a waitress. Lastly, Bree is taken a step forward to help Peter when she finds out how bad his other addiction is.
The family attends "Stab-A-Lot: The Itchy and Scratchy Musical." The musical's director is a graduate of Springfield Elementary and Principal Skinner puts his foot in mouth when he makes sexist comments about her education and that of women in general. He tries to make the situation better, but only buries himself deeper and deeper until he is fired and replaced by Women's Educational Expert Melanie Upfoot. The first thing she does is split the school into girls and the boys. Lisa dislikes the way girls are being taught math and she ventures over to the boy's side of the school in search of a challenge. Disguising herself as Jake Boyman she starts attending the boy's school but while she finds the math problems more interesting, it is being a boy that is a greater challenge.
David and Carlos are still investigating the poison that is affecting Charringa's lemon crops in Florida, before the United States decide to bomb Cuba. Jill, on the other hand, asks Mayko to contact all the other labs using the same stem cells from Korea to let them know a retrovirus is in that strain. Bob offers to verify all the steps one more time with her and see if her findings are correct. Simon Jessup finding that Glenn responds to all the stimuli suggests that he undergoes brain surgery.
Huff gets an unexpected visit from his father. Teddy ends up meeting a very attractive young lady while down at the beach. Izzy finds herself arrested on a DUI charge. Beth decides that she will host a meeting of Paula's prayer group. Russell tracks down his young client, who is at a drug house, and then ends up joining in the festivities.
Vito considers starting a new life in New Hampshire, while Anthony continues his pursuit of revenge against Junior.
Addison's patient is a Catholic mother of seven. Addison gets in trouble after learning that the patient's husband won't use contraceptives. Derek treats a divorce attorney who asks if Derek is in need of her services. While Izzie and George are talking about their personal lives they "overhear" part of Derek's conversation with the divorce attorney who calls herself one of Seattle's best. Alex gets in trouble with Addison yet again for not being able to keep his mouth shut when other people think he should. A legendary jazz musician refuses to see medical reason. The musician is Burke's musical hero. Finn makes Meredith breakfast.
Bill and Roman's disagreements result in lawsuits from both sides as well as unwanted houseguests from the compound. Sarah learns about her family's history from her grandmother and Joey confides in Barb.
Vincent is introduced to a man named Hauer, and learns some truths about Halos and Proxies, discovering a horrific revelation.
With newly appointed Captain Fleming in place, Red Troop are dispatched to a former Soviet state in a race to save the kidnapped daughters of a British diplomat. As the rest of the troop track the armed rebels through dense forest, an injured Henno is left behind at base where he comes to suspect there is a mole amongst them...
There are strange goings-on at a comprehensive school - UFOs, over-intelligent children, and odd-tasting school dinners. This attracts the attention of the Tenth Doctor, Rose and Mickey Smith, as well as a couple of old friends…
When an assailant opens fire in the FBI offices, Don and his team must determine his motive and possible connection to a dangerous arms dealer who is on trial. After nearly getting shot, Charlie is shaken and reluctant to return to the offices, which hinders his contribution to the case.
Aang and the gang discover an Earth town that celebrates something called "Avatar Day." But when they get there and learn the festival is of "anti-Avatar" sentiment and Aang is put on trial for a crime a past incarnation allegedly committed. Looking to clear the Avatar's good name, Katara and Sokka venture back to a familiar place to gather evidence and discover the truth.
Annabeth gets involved on a murder trial where her victim was strangled the night before her wedding. During the trial Annabeth discovers that her victim was hiding a terrible secret from her friends and family which may have lead to her death---that she was previously married and not a virgin that many had thought to believe..
Ed and Jillian go to a spa. Danny and Mike are suspicious about one of Sam's whales. Derek and Delinda are getting serious.
Mr. Moseby and the Tipton Staff is challenged to a bowling competition, by its rival, Ilsa and her team. Zack is the star bowler for the Tipton, but ends up having to be replaced due to getting grounded. Zack's replacement must overcome his emotional scars, due to a past bowling incident.
When Ignatius gets bored, he clones himself with a new Lexcorp device. But when the machine gets out of control and creates endless clones of him, Superdog has to fetch them all.
Bloo gets jealous when Mac is chosen to be the sidekick of an imaginary superhero friend.
The Stewarts are having a busy week. Hannah Montana is about to perform for the Queen of England and the Queen's granddaughter; Jackson is in his school's volleyball championship; and Mamaw Ruthie is in town on a surprise visit. But when Mamaw only spends time with Jackson, Miley believes that Jackson is Mamaw's favorite.