While visiting four of the Cook Islands, Scott is challenged about his commitments to the year trip while Justin learns from the locals how to live off the land. That is until his love for animals is challenged by "the head hunters" – the local school boys, who take the guys on a traditional pig hunt.
Inside an Indiana dairy farm, Mike learns how to milk a cow and use a blow torch to clean her udders. Then, Mike gets the inside scoop on how to inseminate a cow. Finally, he gets an up-close look at fatherhood as he helps deliver baby calves.
Sam is going to Todd's photo exhibit, but doesn't want to go alone, so she asks Craig, whom she thinks is a complete stranger, to join her. Sam soon gets the hint that they've met before and things doing go smoothly. Kevin discovers a demeaning picture of Sam in Todd's photo collection.
Moz is a drug dealer and has very strange clientele who come and go from his flat.
Allison meets Meghan Doyle, Joe's new business partner. Meanwhile, her old car stops working and Joe surprises her with a nice looking used car. The car ends up being the center of a horrible unsolved crime though.
The girls go out to find a new home. When they find one, the guest list for the housewarming party is subject to more than just one fight.
Serena's world descends into chaos when a former friend, the evil Georgina Sparks returns to town. Nate connects with the last person he expected, Vanessa. Blair hatches a plan to sabotage her biggest rival, Nelly Yuki. Meanwhile Serena goes out with Georgina, but things get so bad that Serena thinks someone spiked her non-alcoholic drink. Jenny develops a crush on a dog-walker, Asher Hornsby, who might be her ticket to permanent popularity.
Barney and Marshall have a discussion about "The Bro Code" because Barney has broken it and wants advice.
House copes with a patient whose symptoms conceal a greater problem, but spends much of his time dodging Cuddy's orders to give performance reviews, and fighting with Amber over who gets to spend more time with Wilson.
When delivery of another collectible leads to Penny's lashing out at Leonard, he decides it's time to give up his habit, much to his friends' protestation.
Robert fails a drug test but is determined to prove his innocence. Meanwhile, the Hammersley uncovers a smuggling operation by Samaruian rebels which is designed to destabilise the government.
Nathan and Haley throw a birthday party for Jamie. Deb hired a clown, and Haley is not happy with it since it's a creepy one. Lindsey returns to Tree Hill for Jamie's birthday, which gives Lucas hope that the relationship will be rekindled. When Dan arrives, Deb's mood swings fast and in the meantime Brooke and Peyton attend the party with baby Angie.
Alan makes wedding plans for Evelyn and Teddy, while Charlie figures out how to get more acquainted with his future step-sister.
Nick Cheney was once a successful director, but he has now ended up mainly directing low-budget films. We meet him as he is directing The Scarlet Pimpernel at Magna Manor. A former convict, Jed Norris, has been hired as a security guard on the film set, and one night he finds the director dead, beheaded by the use of a guillotine.
The team re-opens the case of a woman who allegedly committed suicide in 1962 when the victim's granddaughter comes forth with evidence that the note found on the death scene -- then thought to be the suicide note -- was not written in the victim's handwriting.
In an attempt to solve Scotty's financial issues, Kevin offers to file domestic partnership papers with him. Meanwhile, Nora meets with an interior decorator in an attempt to try and make a fresh start and the Walkers' attend a fundraiser for cancer research.
Brian, afraid that he may have lost his last chance at love, searches for a former flame, Tracy. To his surprise, he discovers that he is the father to her son, Dylan. Tracy decides that Brian should raise the boy, and she drops him off at the Griffin's house. When Dylan runs rough-shot in the house, Brian's attitude towards parenting doesn't settle too well with Lois and Peter.
Zoey's Physics teacher decides to take the class on a field trip to go on a roller coaster, and all the students are ecstatic, except for Michael. He's got a big problem, but will the gang be able to help him out, and will Lisa stand by his side?
The demonic Shredder has transformed New York City into a nightmare version of Feudal Japan and the rest of the modern world is next! But the Turtles have a plan, and if it takes allying themselves with some of their former enemies to bring the fight to the Shredder, so be it... because if they fail, all life as they known it will cease to exist.
Stressed that her birthday parties never live up to her expectations, Peggy plans herself a disco-themed party on a mystery train, but after Luanne ruins the surprise, Peggy worries her parties will always end badly. However, a new mystery arises after a couple sneaks away for some private time in the train bathroom, and the partygoers must figure out who did it.