Steve attends work with Stan and is introduced to the National Security Agency; and Hayley bags being a vegetarian and eats meat for a day.
When the family accuses Hayley of being too much of a pessimist, she has Roger hypnotize her into mentally regressing her back into her more pleasant six-year-old self. Meanwhile, Steve and his friends buy a slow cooker.moreless
To meet girls, Steve signs up for the high-school water-polo team; and Roger and Stan invest in a boat.
Stan tries to protect a tree from being chopped down to make way for a stadium while Steve is worried that he might not grow any taller.
Stan gets addicted to texting after he hypocritically limits Hayley's texting. Meanwhile, Roger helps Steve get over his fear of diving in public.
A Chinese businessman buys "American Dad." Elsewhere, Francine is committed to an insane asylum when Stan forgets their anniversary.
Jeff returns from space, allegedly. Elsewhere, Steve looks after Snot's hamster.
After witnessing a scary car crash, Stan decides to see a psychiatrist, while Roger and Klaus prep for a wine tasting.
Wheels and the Leg Man (Steve and Roger) must solve a real mystery in New York City when Francine gets kidnapped by a mysterious villain! Meanwhile, Stan and Hayley try to bond, but end up getting stuck with an extremely annoying celebrity.moreless
While on a trip to Los Angeles, Stan believes he is the reincarnation of a Hollywood movie star, while Roger tries training Hayley and Steve.
Hayley considers having an affair with a married co-worker.
After Steve swears at Francine, she stops carting for him. So he then becomes a famous internet chef. Meanwhile, Stan thinks that he can make people disappear with a snap of his fingers.moreless
Hayley's dream of playing for a roller derby squad hinge on whether she can recruit her "sister" Steve to play. Meanwhile, a carpenter with a magic touch stops by Stan and Francine's; and Roger takes over the local roller-skating rink.moreless
A spoof of "It's a Wonderful Life" has Stan dreaming of trading places with carefree, single Principal Lewis, and when his wish comes true, Lewis winds up as the head of Stan's clan.moreless
Francine's sister Gwen visits, and Hayley feels she has an ulterior motive besides just spending time with the family. Meanwhile, Stan gives Steve lessons in the art of hugging.
CIA cuts lead to Stan taking a volunteer position as a security guard on a college campus, while Roger opens a bed and breakfast to help with the family finances.
Steve and Snot are tired of being bullied, so they enter a karate class, but Snot is soon brainwashed by the sensei. Elsewhere, Klaus must move outside due to his foul odor.
Stan and his friends set out to prove that man is better than machines when they steal the King of Thailand's golden inhaler. Meanwhile, the rest of the family competes in a slow-motion race.moreless
Hayley decides to become a blonde in a bid to get more attention. Meanwhile, Stan and Steve try to find a new home for the Smiths.
A female alien is discovered in the woods by Francine and Roger, who begins a relationship with her, but quickly tires of her many quirks and eccentricities.
A comely new neighbor offers Steve and his friends a salacious offer in return for doing her housework.
A heart attack compels Roger to sell his bar to a restaurant chain and forces him to move in with Greg and Terry.
The Season 10 finale has heartbroken Hayley trying to get over Jeff's abduction, and meeting a millionaire who helps her deal with the tragedy, that is until Steve and Snot discover Jeff's alive and trying to make his way back to her.moreless
CIA budget cuts leave Stan out in the cold, and since his company work record is classified, his only employment opportunity is at a local grocery store that is managed by Steve. Meanwhile, Roger and an annoying coffee-shop musician engage in a wager that leads him into a Faustian pact with an infomercial guitar instructor.moreless
Stan's newfound talent of checking out women on the sly leads to an auto accident, and a tough insurance agent threatens to rat him out to Francine. Meanwhile, after spilling wine on the new couch, Roger and Klaus come up with a far-fetched plan to keep from being caught.moreless
In an effort to learn life skills, Stan forces Hayley to take a job tending bar in Roger's attic watering hole, and when Stan's boss, Bullock, turns out to be a devoted regular, Stan sees it as an opportunity to advance his career.moreless
Stan infiltrates a leftist cell that's planning a terrorist attack, but is found out. When he is brought home by a radical group, Hayley thinks something is amiss and that her father may have been "turned" by the enemy.moreless
Stan turns into a "woman" after taking an experimental drug.
Stan gets tired of Steve and his friends not going outside to play. So he drugs them and drops them in the new CIA holodeck to simulate them being stranded in the woods. Meanwhile, Hayley gets tired of Roger not caring about anything and making fun of people who do, so she buys the deed to Roger's home planet's sun.moreless
Roger and Steve switch faces in a scheme that has the former wooing an attractive girl for the latter, but things come to a head when Roger actually falls for the young lady. Meanwhile, Stan and Francine take to the sky as "Charlie's Angels"-type flight attendants to thwart a sinister scheme concocted by Mark Cuban (guest-voicing as himself).moreless