When the team is investigating the murder of a probation officer and a hostage situation, Horatio learns that the main suspect could be his son.
Jeff's snoring has gotten out of hands. Audrey, who isn't able to sleep anymore, decides that she and Jeff should sleep in separate bedrooms. While this could seems like a bad situation for some, other like Jeff see the good side of it. Jeff takes advantage of his new found freedom by staying up too late and living like a college student.
Hank is disturbed by Becca's negative reaction towards the concept of happy endings, even more so when he finds out that it is partially his fault. Marcy comes up with the idea of a threesome with Charlie and Dani, but it ends unexpectedly.
Spencer and Heidi's wedding date gets closer, but will he tell his family before he steps into church? The Teen Vogue event gives Whitney and Lauren a lot of work, while Jason tires to start over with a new girl and a new place.
The kids escape from the Slitheen and meet up with Sarah Jane at her house. They discover that vinegar will kill the Slitheen so, armed with vinegar bottles, they return to the school and destroy the three adult Slitheen and their machine. Carl, who took on the form of the class brain-box, escapes via a teleport but Sarah Jane assumes that he is dead. Back home she accepts Clyde into the group but asks for him not to tell others about their experiences.
Maria and Luke start their new school where they pal up with another boy, Clyde. However, two of the teachers and the class genius turn out to be Slitheens in human form. They are shapeless smelly invaders from another planet whose aim is to destroy the Earth by turning off the Sun with the aid of a machine which Luke inadvertently helps them to start. The three teenagers are chased around the school by the Slitheen family.
Jake is getting ready to start a new school as he graduates to Junior High. Alan and Charlie take him school shopping and find themselves in trouble.
Brilliant physicist roommates Leonard and Sheldon meet their new neighbor Penny, who begins showing them that as much as they know about science, they know little about actual living.
With U-Turn's timely demise Nancy and Conrad check the status on their debts and then they check in with each other. Someone is pregnant and they are keeping it. Doug continues to try to sabotage Celia and Celia continues to sabotage Nancy. Nancy celebrates something. Silas begins spending more time with Tara.
Michael and Mahone try to lure Whistler out of his hiding place. T-Bag gains some upward momentum in the prison hierarchy as the water supply is running low. Lincoln meets familiar and not so familiar faces on his quest to free Michael.
Chuck Bartowski is an average computer geek until files of government secrets are downloaded into his brain. He is soon scouted by the CIA and NSA to act in place of their computer.
Robin shows up with a date and this motivates Ted to 'get back out there'. We also learn something major about 'the Mother'.
Oscar's complaints about the lack of Dog River-oriented cable programming bring results, and Brent is chosen to select one show created and filmed in town. Brent takes advantage of the bribes he's getting while thinking about the shows. Wanda, Lacey and Emma can't agree on what type of show they want, while Hank finds himself the unsuspecting suspect in Davis and Karen's police show.
When the bones of a young girl are found, everyone but Nikki is convinced it's a teenager who went missing two years ago.
Elmo imagines himself with a pet dinosaur and sings a song about all the fun things they would do.
When the guys take Bobby to a college football game, their hijinks land them in a VIP box suite and calling plays for the visiting team.
Kel is desperate to find out if he's a nob with noble blood. Kath finds a family skeleton in her closet (well her walk in) and Sharon comes face to face with a long-lost relative from the other side of the world. Guest starring Matt Lucas (Little Britain) and Stephen Page (Bangarra Dance Theatre).
In the aftermath of the latest assassination attempt, Killface finds religion and risks alienating the various groups that have supported him. In the middle of this, he learns a secret about someone very close to him.
Peter retells the story of Star Wars in this hour-long episode of Family Guy. When Princess Leia is captured by the evil Darth Vader the droids C-3PO and R2-D2 escape to the planet Tatooine to find help from the Rebel Alliance. There they encounter Luke Skywalker, Han Solo, Chewbacca and Obi-Wan Kenobi who infiltrate the Death Star then rescue the captive princess from the Death Star and return to aid the Rebellion in its fight against the Galactic Empire.