Along with Bobby, Hank is forced to attend a defensive driving course taught by a comedic instructor, who encourages Bobby to get in touch with his roots.
A small Colorado town is turned into a nightmarish scene overnight when it becomes the battlefield for two hostile alien species determined to end each other.
A crew of underwater researchers scrambles to reach safety after an earthquake destroys their subterranean laboratory, and they must walk across the seafloor.
Homer gets his own political talk show after a video of one of his rants goes viral, and Marge and Lisa start to worry his opinion might become too powerful.
Lisa creates a social networking site and is called to trial when Springfield's obsession with the site grows chaotic; Patty and Selma compete in the Olympics.
Marge and Lisa's mother-daughter Valentine's Day plans take a turn when Lisa meets Nick, and they fall head over heels for each other in a fairytale romance.
Bart becomes a graffiti artist, painting Homer's face all over town, but when he's caught by established street artists, they ask him to be in a gallery show.
Eugene, Tina and Louise re-imagine Wagstaff for their essays, but Bob and Linda hear that their versions of the school are "too creative" and "offensive."
Tina and her family are brought in to cater at her classmate Tammy's Bat Mitzvah, and Tina seizes the chance to check out the boys from different schools.
With Bob and Linda away on a vacation, Teddy works for the name "Uncle Teddy" by setting Tina's crush straight after learning that he just wanted free burgers.
Louise, Gene and Tina wreak havoc on one end in an attempt to hijack a chocolate supply from the restaurant car, and Bob and Linda end up in a wine "taste-off."
When Linda predicts that a telemarketer will call the restaurant and her prediction comes to fruition, she and her children believe that she is a psychic.
Peter and Chris try to reconnect after finishing last in a "Generation Gap" game at the carnival; Brian starts to date a carny but struggles to break up later.
Leela's wedding day arrives, as the aliens plan to buy the entire planet and banish all of its residents to Neptune, which would lead to a space war for Earth.
After being dumped by her boyfriend, Luanne starts to drive the family crazy by crazing every day and night, leading Hank to find her a new significant other.
Bobby's sugar splurge is mistaken for ADD, causing Peggy to blame herself and quit her job, while Luanne fears that she caught the disorder from Bobby.