Yori’s sensei has been kidnapped and all evidence indicates that Lord Monkey Fist is responsible for it. Yori comes to Middleton to get Ron, in which Yori and Ron head off to South America to attempt to stop Lord Monkey Fist. However, when Kim starts to grow suspicious about Yori’s sudden appearance in Middleton, she heads after them to get to get to the bottom of their predicament.
The spirit of the mother of a teenage boy attempts to communicate with her son via white noise. Melinda must find a way to get her messages across.
Mark and Sophie are finally beginning to go steady when Sophie is moved away from London for work. Mark is devastated, so Sophie offers phone sex as a solution, which Mark nervously accepts. Meanwhile, Jeremy is forced to consider getting an old friend sectioned.
Scoutmaster Lumpus's parents fail to visit on Parents' Day, so the rest of camp masquerades as his mother and father to cheer him up, with unexpected results.
Lumpus can't stand the fact that Slinkman is under doctor's orders to take a vacation, so Lumpus decorates Camp Kidney Hawaiian-style, hoping to fool Slinkman.
After misbehaving yet again, Bernie punishes Bryana and Jordan severely. Yet again Wanda thinks he's being too hard on them. But in the end, she catches on. Vanessa turns out to be the sneakiest of them all.
With Hannah leaving for Minnesota in a few days with her mother (guest star Jayne Brook, "Chicago Hope"), Bright and Amy find themselves taking the loss of their girlfriend and best friend, respectively, harder than even they expected. Jake sets out on a high-risk bike trip with his friend, Cliff (guest star Simon Rex), that takes a near fatal turn; Andy and Harold uncharacteristically decide to go skydiving after hearing of Jake's daredevil ways; and Reid (guest star Justin Baldoni) keeps his promise to Ephram and backs off from pursuing Amy, leaving her feeling all the more lonely.
During the investigation of the crime, Annabeth discovers a picture of the defendant and the victim's husband, leading her to believe that the murder of his wife may not have been an accident. Meanwhile, Steve asks for Maureen's help after he must recuse himself from the appeal of a death penalty case after a key witness accuses him of suborning perjury.
A home in Tucson exerts a strange aura and exhibits a shadowy figure.
Jo Frost returns to Britain to help kickboxing couple Stuart Lambert and Laura Bradbury with their three children: Matthew, 5, Tegan-Olivia, 2, and baby Diesel, 5 months. Matthew's aggressive outbursts leave Laura battered and bruised; he even gives her a bloody lip when he punches her in the mouth! As the stepfather, Stuart is desperate to discipline the karate kid, but Laura won't allow it; instead, the family is split down the middle with Stuart taking responsibility for his daughter and Mom fighting to control Matthew.
When Aang tries to find the north pole, he is found by the north pole instead. As they are taken there, Aang and Katara are eager to find a waterbending master, only to discover that girls are not allowed to learn waterbending.
Francis decides to surprise the family by coming home, and the power goes out in the house. Meanwhile, it's Lois who's in the dark when Hal decides to cancel their anniversary dinner in favor of a Reese-cooked meal at home. And Malcolm ends up in hot water after he sneaks three Dutch girls into the house.
Red buys a motel cheap, then finds out it doesn't include the land and he has to move it off the property. He decides to turn it into a cruise ship. Ed Frid brings a whole bunch of bees for his Talking Animals segment. Red builds a sound-proof van. Bill and Winston try some wind-up airplanes. Glen Brackston tries to guess the word 'exercise' in the Word Game. Red invents a space-saver table and converts a juke box into a video game.
Megan feels responsible for an agent's death following an explosion at a meth house the FBI had targeted for a bust. When the kingpin eludes capture, it's discovered he may also be involved in child pornography when one of the photographs on his computer turns out to be a young girl in a sexually explicit position. The picture sends Charlie on a crusade of his own, as he remembers a girl he knew as a young child that he suspected was being abused, and he's determined to save the little girl in the picture.
A detailed look at the invasion of the island of Iwo Jima, a 36-day battle of attrition that left 6,000 Americans and 20,000 Japanese dead. The island was strategically vital due to its position midway between Japan and American air bases in the Marianas. Iwo Jima served as an emergency landing site for 2,200 aircraft by the end of the war.
When the gang heads to The Bait Shop to see The Subways, Taylor's horsing around causes a major rift between Seth and Summer. Marissa, determined to end the potentially explosive rift between Ryan and Volchok, does whatever it takes to watch out for Ryan. Meanwhile, Matt, Sandy's Newport Group partner, goes above and beyond the call of duty when he learns he has to cut Newport Group staff.
The CSIs sift through the overwhelming evidence from a shootout with drug dealers in order to determine who is responsible for the death of a police officer killed during the incident.
An outbreak of what the Doc suspects is Impetigo leads to problems for Louisa, who must decide whether to follow the Doc's orders to force the infected children to stay at home, or to help the parents by allowing the children to attend school. The decision is made harder by her impending interview to take over the job of Head Teacher - in front of a board of governors that (to his surprise) includes Doc Martin. Meanwhile, an accident in the Fish and Chip shop leaves Bert behind the fryers and the owner's son, Peter, in need of somewhere to stay while his mother is in hospital. His first choice is with none other than a certain Doctor Martin Ellingham...