The group travels to one of X.A.N.A.'s replica sectors in the Digital Sea. Meanwhile, Aelita and Odd get into a fight after Odd's desire to sleep in gets them both in trouble. Furthermore, their arguing inadvertently leads Nicolas and Herve into the factory, where Jeremy is forced to distract them while the group explores the Lyoko copy, which consists entirely of the Forest Sector. On the Lyoko replica, William and a pair of Megatanks arrive to destroy the Skid, the destruction of which would cut the group off from the Supercomputer. Odd and Aelita refuse to work together when they first arrive, but eventually resolve their differences and take William down. Jeremy surmises that another supercomputer is controlling the Replika (what the Lyoko copies were dubbed as), and in order to get rid of it, he'll have to find a way to materialize his friends at the location of the supercomputer.
Danny and Vlad’s game of revenge against each other begins with childish pranks, and, unfortunately for Danny, ends when Vlad decides to run for mayor of Amity Park! By overshadowing voters, Vlad wins in a landslide. The new mayor is eager to use his new power to make life as miserable as possible for Danny and his friends. He shuts down the Nasty Burger, outlaws technology, creates new school uniforms, and passes so many new laws in the name of “protecting the children” that Danny finds it impossible to go ghost.
Hank begins his blogging job at Hell-A-Magazine. Karen is able to set Hank up with her friend Sonja by disguising the get together as a family dinner. At dinner, Becca reveals how Hank met Karen.
Jeremy decides to teach Odd, Ulrich, and Yumi how to use the Supercomputer in case he or Aelita are unable to, being X.A.N.A.'s favorite targets. During the lesson, Jeremy is attacked by one of X.A.N.A.'s polymorphic clones, leaving the others to operate the Supercomputer without help. Aelita is at the final audition with the Subdigitals, competing against two other candidates, and thus cannot be contacted. To make matters worse, the clone heads for her after dealing with Jeremy. Using what they learned from Jeremy, the others are able to rescue Aelita and deactivate the tower without his help. Aelita is also chosen as the winner of the audition despite her walking out on them.
Grace and Ham play cops and robbers with toy guns. Grace’s favorite Aunt Cathy comes to town – has a run in with Earl, clashes with Betty – and reveals some shocking news. But first-- Rhetta, Grace, and Aunt Cathy get drunk and remember old times. Meanwhile, cattle tycoon Alvin Green’s world begins to crumble after his lucky bull statue is stolen. He insists Major Crimes take the case. When Grace’s father has a fire station named after him, Grace’s family comes together for the dedication ceremony. Henry’s cat dies and Grace comforts him the only way she knows how.
A female sports columnist in Chicago deals with the men in her life, including her brother, her best friend, and a sportswriter for a rival publication.
After finding a photo of himself and Jessi locked in Baylin’s box, Kyle and Declan realize that the best way to crack the mystery of Jessi is to get close to her is at the high school charity event. Once there, Kyle uses the opportunity to talk to the already vulnerable Jessi. Meanwhile, other secrets are revealed during the event as Lori finds out the identity of her attacker.
When a Chinese business woman is found dead on the tour bus she and her husband operate, Brenda and the squad must dig deep to investigate her past life.
Audrina invites Lauren out to dinner to get to know Justin better. Lauren is not impressed by him. Audrina talks to Justin and decides to give their relationship time. Spencer suprises Heidi by buying two arcade games for the apartment. Later, she suprises him by painting over the mural in the living room.
Five teenagers must locate and secure ancient relics with unbelievable power, while at the same time stop a demonic corporation who want the relics for their power.
Sanjay has a new experience. Nancy gets bruised. Conrad won't do what U-Turn wants him to. Lupita still won't follow orders. Heylia's out to handle a few things. The Amber Alert is still out on Shane. Andy gets in trouble with a couple who make him for a child molester. Silas gets to talk to Shane. Celia is still having problems with her husband and daughter. Doug begs Celia to forgive him.
Tom has trouble focusing on the hunt for Richard Tyler because of dreams he's having about the future.
Science-fiction addict Kevin believes aliens from outer space may have landed. Truly, Clegg and Alvin help to convince him he is right.
To try and re-invigorate his marriage, Brett decides a romantic trip away to tropical Queensland could be just what is needed. Elsewhere, Kath is feeling flat and Sharon is accused of the greatest sporting crime of all.
A performance at a local "World Music Jam" results in the Conchords gaining two new fans, but Mel is suspicious of the newcomers and their motives. Murray encourages the band to adopt a more "rock star" attitude.
Ryotaro Nogami transforms into Kamen Rider Den-O traveling to different times using the time-traveling train DenLiner to battle the Imagin monsters and preventing them from altering the past to affect the present and future.
The MythBusters team tackles masturbation myths. G-Force’s Tiny needs to shed a few pounds. Popeye’s friends hold an intervention over his addiction to spinach. Godzilla takes a rookie out for a Training Day. Tablesmasher attempts to defeat The Council of Evil Tables. Dirty Harry deals with a punk that does feel lucky. After retirement, Bob Barker handles the neutering personally.
While on a trip to visit Bruce, Johnny views a racehorse being stolen in a vision. He also realizes that he may have lost the chance to reunite with Sarah and J.J. thanks to Stilson's efforts.