Peyton and Lucas deal with shocking news about Peyton's pregnancy as Brooke and Julian face a crossroads in their relationship. Meanwhile, Nathan and Haley celebrate their anniversary, with Dan and Deb babysitting Jamie; and Mouth and Millie work to redefine their relationship.
After discovering Latnok's true purpose, Kyle enlists everyone to stop it at all costs, but keeping all his cover lies intact and protecting Jessi may endanger the operation.
When a flight attendant is murdered, the CSIs uncover all the dirty secrets of airplane travel.
A convicted murderer who has been studying law inside is given the chance to appeal and chooses to represent himself in court against James Steel - his former prosecutor.
Alex helps Harper care for a famous designer's gown during fashion week, but she accidentally ruins it. In order to repair the gown, she must use magic to fix things.
Tim and Eric's origins, The Cinco Mouth Decorator, Dr Steve Brule with a tip on eggs.
The team has to cope with their own emotions as they search for the shooter responsible for Jeffries' shooting.
Unable to communicate with the outside world, the Unit and their families must survive when a deadly gas poisons anyone in their community who steps outside.
Susan tries to impress a teacher at work, Gaby talks Carlos into hiring Lynette, Edie continues to look into Dave's past.
Walt and Jesse find themselves in close quarters with an unhinged Tuco. Marie and Hank comfort Skyler, who is distraught over Walt’s disappearance. Hank pays a visit to Mrs. Pinkman on some not-so-official business.
Kenny decides to give up on his dream of returning to professional baseball. Meanwhile, arrogant car dealer Ashley comes back into the picture.
Longtime friend and pro FMX rider, Ronnie Renner, invites the Nitro crew to his California ranch, where newfound friend and show producer, Johnny Knoxville, is waiting to play a little bull croquet. In between all the madness, the cast find time to drop in on their friend, Rob Dyrdek, at his fantasy factory. After the factory, the cast get back to what they do best: a spectacular chaos crossover involving five motorcycles, a cab, a mountain bike, and a high-powered trophy truck.
Jemaine and Dave help Bret woo the clerk at the cheap zoo (pet shop). Jemaine also helps Murry seek forgiveness from Greg.
Lisa infiltrates a convent in order to steal back Maggie who was accidentally taken in by nuns. While in the convent, Lisa uncovers a series of cryptic clues leading to a hidden jewel in Springfield. With help from resident history buffs Principal Skinner and Comic Book Guy, Lisa sets off to find the coveted prize. But Springfield's Freemasons are also hot on the trail of the jewel, and Lisa must race against them to find the jewel and rescue Maggie.
Kevin and Justin take Tommy on a trip in order to help him make a decision about his future. Meanwhile, Kitty and Evan head to Nora's to meet the new half-brother.
Peter finds an old winning raffle ticket from 1989 that entitles him a golf outing with O.J. Simpson. After befriending him, Peter brings O.J. home home to meet the family. However, the people of Quahog aren't too fond of the former running back.
Emma starts doing pot to get rid of her "plain girl" image. After ingesting marijuana brownies and forgetting to take her insulin, Becca goes into a diabetic coma and has to be taken to the hospital. While in class, Emma learns that the campus cops are doing room searches. She calls Kelly to get rid of the marijuana brownies. When Kelly is leaving the room, he runs into campus cops and they find the marijuana brownies. He gets kicked out residence but is still allowed to go to school. K.C. is found to be living in a group home because of his previous life in juvie.
A narcoleptic falls asleep on the job; a biker drinks gasoline; a couple die after making love.
After Peggy finds out that she is not cool she befriends one of Arlen's most glamorous and cool moms in an effort to learn how to be cool. Bobby befriends her daughter, a girl named Michael Savage.
Iceland’s raw nature, good hearted people and vast open spaces encourage Scott and Justin to brave the elements. From Reykajavik the guys rent a 4x4 truck and hit the open roads, no matter what the conditions. They encounter a family while sheep herding, and join in to help on their way to find adventure in the ice and glaciers . Active volcanoes, ice climbing and squeezing into an underground lava tube hint towards some of the personal strength needed to continue their world adventures.