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 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.

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.

Frankie points out to Mike that his social ineptness has been passed on to Brick, leading Mike to decide that both he and Brick need to be more social, and the Heck family BBQ is the perfect time to try. Meanwhile, Axl volunteers to clean the family pool in an attempt to get girls to stop by and swim and Sue tries to raise money for a local parish because her new friend, Reverend TimTom might be leaving in order to keep costs down

Parent-Teacher conferences cause Frankie to worry about the kids. In them she's told Axl is gifted but not applying himself, that her teachers still do not know who Sue is, and Brick may have to repeat the second-grade due to failure to return over 30 library books. Guest star Betty White as the school librarian.

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.

After years of being at their kids' beck-and-call and never having time for themselves, Frankie and Mike decide to take charge of their lives and regain control over the Heck household. But Axl, Sue and Brick don't plan on going down without a fight.

Frankie becomes emotional as the Hecks send Axl off to college, Sue waits for an important call from school, and Brick gets a new cell phone.

Sue prepares for her graduation and worries the day won't go perfectly. Meanwhile, Brick gets the opportunity to skip a year in school and Axl grows concerned about Devin's fun summer pictures she posted on social media.

Dreading the fact that they are always late to church and end up in the overflow room, Frankie makes the decision to have the family watch a Christmas Eve service on TV from the comfort of the Heck house. But a string of events make their evening anything but a peaceful, silent night.

After nine hilarious and heartfelt seasons, a Heck leaves the nest as the family takes a road trip to Denver, where Axl will start his new job – and new life away from home.

The series concludes as the family escorts Axl to Colorado. Meanwhile the long affair of the snow globe and its relation to Sean and Sue's relationship comes to a head.