The pilot episode of the American television series The Middle, written by DeAnn Heline and Eileen Heisler and directed by Julie Anne Robinson, premiered on the ABC network in the United States on September 30, 2009. The pilot introduces viewers to the five central characters within the show who make up the Heck family: Frankie the working mother; her husband Mike; and their three children - teenagers Axl and Sue and their youngest child Brick. The show follows the characters as they deal with everyday challenges and family life, with Frankie serving as narrator.

The critical reaction to the pilot episode were mostly favourable. The show held an aggregated score of 70/100 on the review website Metacritic. Many reviewers drew comparisons with another similarly named comedy series, Malcolm in the Middle.

Trying to save her job, Frankie organizes a publicity stunt by filling a car with jelly beans. Meanwhile, Sue fails to make the swim team and realizes that she needs glasses and Brick starts reading his mother's romance novels when he can't check books out of the library.

Frankie and Mike's romantic anniversary get-away is ruined by various family matters, including Brick being sick, Sue being lovesick, Axl just getting his learner's permit, and two psychotic aunt's and their dogs.

Sue sells sausage and cheese samples for the school. All her efforts go in vain as the school fails to see this. Frankie demands her daughter fights for her rights. Meanwhile, Brick discovers love with his current girlfriend a little stressful as she bosses him about.

When Axl accidentally breaks down the front door, Mike insists that, he fix it in order to teach him a lesson, which leaves the Heck house wide open for days. At work, Frankie needs to sell a car within a week or she will have to wear a dog suit outside the lot for promotion. Meanwhile, it's picture day at school and Sue is concerned because she has never had a flattering picture taken of herself.

Frankie accidentally hits Brick in the head with a beer bottle when trying to get the trash out before the garbage truck leaves. But when Brick innocently tells his school that the scratch was caused by his mother throwing a beer bottle at him, a social worker comes to evaluate the Heck family. Meanwhile, Bob helps Mr. Ehlert shoot a commercial for the car lot.

Frankie's plan to have an idyllic family Thanksgiving backfires when Mr. Ehlert demands his staff work over the holiday. Brick goes missing in a corn maze.

When Mike discovers that Brick is a spelling whiz and won the school spelling bee, he puts all his efforts into training him to win the regional bee, which could ultimately lead to competing in the Scripps Spelling Bee. But as the family gets set for their road trip to Chicago for the regional bee, Frankie and Mike are horrified when they realize they forgot one thing -- Sue's birthday.

Axl is heartbroken when his girlfriend (Alexa Vega) breaks up with him; Sue and Brick watch a scary movie.

Frankie fears for her job when a motivational consultant comes to get the sale team into shape. While Frankie is putting in many extra hours, Mike has to deal with the children and their issues, including making the house more fun for Axl and his friends, giving advice to Sue's ex-boyfriend and helping Brick with a school project.

Mike's dream comes to fruition when Frankie's boss, Mr. Ehlert, offers him two tickets to the Final Four. Unfortunately, Frankie's uncle dies and the funeral is set for the same day, leaving the two in a battle and Frankie making Mike chose what life event is more important to him. Meanwhile, Sue gets Brick out of going to a birthday party by impersonating Frankie over the phone, but the plan hits a bump when Frankie needs to call and tell them that Brick cannot attend because of the funeral.

Frankie is worried that Axl's going to get his heart crushed again when his on-again/off-again girlfriend, Morgan (Alexa Vega, "Spy Kids," "Ruby & the Rockits"), re-enters his life and tries to mold him into the man she wants him to be. Meanwhile Brick learns what it means to be a mother hen when he has to watch over a baby chick for a school science project.

Frankie comes up with a plan to stay on top of her kids' schedules; Brick's new teacher (Doris Roberts) accuses Frankie of being overprotective.

Mike and Frankie must decide whether to attend Axl's football game or Sue's first cross-country meet; after raking the yard, Brick wants to set the leaves free in the forest.

When Axl is suspended for skipping school, Mike decides it's time to teach his son a lesson about life and makes him go to work with him at the quarry. But Mike's master plan backfires when Axl likes the job so much that he wants to quit school and lead the life of a quarryman. Meanwhile, Frankie is devastated when she fears that she accidentally prayed away Sue's cross-country team after it's cut by the school; and while practicing a magic trick, Brick makes the main TV remote disappear - and can't figure out how to make it reappear.

As the Super Bowl approaches, Mike is thrilled when Brick takes his advice and studies up on football in order to understand and talk the sport. But Axl thinks his little brother is taking over his turf by being Mike's football buddy - a position Axl used to cherish. Meanwhile, Frankie thinks her professional career is looking up when Mr. Ehlert chooses her to accompany him to a managerial seminar, and ex-boyfriend Brad asks Sue to be his dance partner for the school's annual Square Dancing with the Stars.

Things don't go as planned when Mike and the kids give Frankie a day without the family as a Mother's Day gift.

Frankie has a meltdown and forces the family to make significant changes to their lifestyle. But just as she puts these changes into effect, she leaves them to spend a some time relaxing with her mother.

Frankie gets Brick to snitch on his siblings, but Mike disapproves of the tattling. Meanwhile, Sue threatens to get Axl in trouble if he doesn't obey her commands; and Mike reluctantly goes to Brick's school for Parent Day.

After being fired from the car dealership and vowing not to take any job that comes her way, Frankie goes to tech school to get a real career; Axl begins his senior year of high school; sophomore Sue mentors a freshman.

During the Orson Centennial parade, Mike and Frankie volunteer to drive a float, Sue tries to make Darrin jealous, Axl tries to make some money, and Brick is upset over his town slogan not being chosen.

Frankie limits the hours during which the kids can voice their needs; Mike watches to make sure Darrin doesn't take advantage of Sue; Brick invites new friends over.

Sue enters a contest to win a car; Mike and his brother bond on a road trip to Chicago for Brick's spelling bee; Frankie goes to Axl's dorm to help him find a missing desk.

Frankie must work at Ehlert Motors for one day in order to collect her pay on an old paycheck, Mike offers Sue a part-time job at the quarry, and Mike’s dad attempts to persuade a lazy Axl to help replace the damaged kitchen sink.

Frankie remembers she has to come up with something to place in the time capsule; Bill Norwood informs Mike that he and Paula are separating; Brick tries to win Cindy back; Axl volunteers Sue to be his personal assistant.