When Sheldon bans Penny from the apartment for numerous minor infractions, she decides to retaliate.
Tension arises backstage at Peyton's USO show as Lucas deals with Peyton and Julian's past. While Haley tries to find a way to ease her stage fright, Nathan grapples with a decision that could forever change his career. Meanwhile, Brooke receives a call that could end her relationship with Sam and Millicent confronts Mouth over Gigi.
Barney creates a holiday to celebrate not being a father. Meanwhile, Lily and Marshall are considering having a baby, but Lily first wants advice from Ted and Robin.
Blair sets out on a mission to break up her mother and Cyrus Rose, her new man. Jenny moves in with Agnes as the two continue with their plans for their own fashion line. As Serena continues to fall for Aaron, she learns something that may derail their relationship forever while Dan interviews Bart Bass for an article for New York Magazine.
Alan tries to escape Judith's grasp as Charlie and Herb go on the prowl to pick up women. They later end up going back to Herb's hotel room with two prostitutes, where Herb declares his love for Judith and races over to win her back.
The Los Angeles FBI office receives a call from a man who claims his son has been kidnapped with just one week to live unless his family pays a $230,000 ransom. Agents follow the money trail overseas and uncover a ruthless international kidnapping ring.
After being given community service for her altercation with a cop, Sam tries to help out Natalie, a wayward young woman, despite pleas from her friends not to. Howard tries to give Todd advice on how to win Sam back, even though he told Howard he wasn't interested anymore.
Sam shares a secret with Sookie; Lettie Mae and Tara celebrate; Jason and Amy debate what to do with Eddie; Bill faces a harsh penalty.
Tommy and Julia celebrate their wedding anniversary in a magical way while Justin and Rebecca get spooked about their own romance, and Kitty's neuroses endanger the McCallisters' shot at adoption.
Peter begins a relationship with Mia and a friendship with Riley. However, he finds out how difficult it can be to balance them both. Meanwhile Clare and Alli finds a surprise at Mr. Simpson's house.
In order to raise the school's average for standardized tests, Principal Moss classifies Bobby as a low achievement student. However, the plan backfires after Bobby is placed in a class where he no longer has to do homework and doesn't have to take the tests.
As we descend beneath our modern day cities, we are met with ancient and hidden secrets. Journey with us back through history and rediscover cities of the underworld.
Miley is riding high when she begins Drivers' Ed, but she comes crashing down to earth after she learns that the class is not the easy ride she thought it was.
Steve plots revenge after girlfriend Debbie loses a very dirty election for class president. But it backfires badly.
Out for a ride along the river, Amy comes across an RCMP officer desperately trying to save a young boy from drowning. Scott misinterprets Nick Harwell's polo match invitation to Lou as a date. Mallory seeks Jack's advice on how to deal with her love life.
Tommy blackmails Mayor Panzarella into supporting the waterfront development but runs into opposition from a community group organized by Michael. Freddi Cork is forced to take a legitimate job as a car salesman. Eileen's pregnancy costs he a chance to advance. Declan begins his investigation to statehouse corruption as the disappearance of Federal Attorney Franklin draws attention away from his efforts. Rose begins to learn the joys of managed care.
The team re-opens the case of a 12-year-old boy who died in 1969 when the retired detective who originally worked the case receives a new clue -- a toy rocket bearing the victim's name.
The team travels to Iraq to save Jonas' daughter, who has been kidnapped; Col. Ryan must face the consequences for his adultery with Mack's wife.
Lynette and Tom uncover the unsettling truth about son Porter. Gabrielle suspects Carlos' best client, Virginia, has ulterior motives. Bree's moment of weakness could bring her great embarrassment and shame. Katherine's not-so-little secret is unveiled. Susan learns of Jackson's true passion. Finally, Mrs. McCluskey's sister Roberta unearths a disturbing fact about Dave.