Lily, Barney and Robin attend a high school prom to scout out a potential band for Lily and Marshall's wedding reception. In order to get in Lily and Robin pretend to be the dates of two kids who were going alone. Ted and Marshall are back at the apartment where they are preparing the invitations to be sent out.
Allison repeatedly dreams about a woman who is being watched by a stranger in her bedroom.
Westmoreland wants Michael to speed up the planned escape, and gets Bellick one step closer to unraveling it. Michael has to decide whether to involve Sara in the breakout plan. Tweener's devotion is put to a test. Veronica finds out that her ally unexpectedly has a connection to an inmate serving time at Fox River.
Jake’s teacher has a meeting with Alan and Judith to discuss the lack of interest Jake has at school. Alan starts to fall for Francine, in a platonic way, because he is tired of the lack of intelligent communication he has with Kandi. Charlie helps Jake audition for his school musical.
Christine tries not to have a meltdown when her ex-husband, Richard, brings his "new" Christine with him to pick up Ritchie and take him to breakfast so that they can get to know one another. By day's end, Christine tries to pull herself together to make a good impression at parents' night at Ritchie's school, but is caught off guard when "new" Christine shows up as well.
As Rose gets ready to make a huge announcement, Simon breaks down as he realizes that he may have trapped himself in a marriage that he does not want. Meanwhile, Eric and Annie reminisce about their children and their younger days as they prepare for the rehearsal dinner and meet Rose's unconventional parents.
Doug and Deacon discover they have more in common with each other's wives than their own, so they start hanging out with each other's wives as well. When Kelly tires of Doug, he ruins Deacon and Carrie's good time. Meanwhile, Arthur dispenses romance advise, and the recipient finds success simply doing the opposite.
Isis steals a magical pipe that can control animals and uses it to rob stores in Metropolis. When Ace and Krypto end up under her spell, Jimmy the rat has to fight her off.
Trump's children, Ivanka and Donald Jr. fill in for Carolyn and George for this task, which requires the remaining candidates to promote one of New York City's biggest tourist attractions.
Mona is taking her break-up with Chase out on everyone, only to realize that she's also putting her professional career in jeopardy. Dee Dee's newly signed client is married but when she suspects he's having an affair she is faced with a moral dilemma. Meanwhile, Phyllis and Big Dee Dee assume the girls are planning a big Mother's Day celebration, since neither has suggested plans to celebrate.
Vicki and Aaron Newton are separated, with joint custody of their two sons, Aaron (12) and Kobe (5). Though the boys are angels for Dad, young Kobe saves his worst behavior for Mom. He is violent and destructive -- hitting, kicking, slapping, punching and swearing. He even throws rocks at Jo's head. Aaron isn't physically aggressive, but he does talk back to his mother. For the first time, Jo Frost observes life in two homes to hone her recommendations for each parent. But can she get them to collaborate on their child-rearing techniques?
When a serial dog killer starts stalking local parks, the team are reluctantly forced into taking on the case.
While attempting to return some personal effects Dr. Macy makes a startling discovery. Jordan and Lu butt heads over the morgue janitor and Lily prepares for the wedding.
Instead of getting a job, Bobby and Joseph discover that they can make more money, and look cooler, by hanging out on street corners and begging.
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.
While Santos is busy trying to select a new vice president, his wife finds her new responsibilities staggering. Meanwhile, Vinick ponders his next move.
Sunnyvale is finally going to get some publicity for their new "Convenients Store" and Bubbles "KIttyland" as a TV reporter comes to Sunnyvale. Lahey goes to the dump and finds something surprising. Randy has a new fan.
Goren and Eames investigate when a respected professional is found murdered in the East River, his death presumably connected to a series of gambling losses.